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Reviewed on May 26, 2018 , Ian Cumming, Mehdi Azzabi, Eric Bousquet

LG UJ7700
TV REVIEW

Usage Ratings - Version 1.2

Test Benches: test

  • 1.2: Winter 2018
  • 1.1: Summer 2017
  • 1.0: Winter 2015
  • 0.9: Winter 2014
  • 0.8: Winter 2013
7.3
Mixed Usage
What it is General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
Value for price beaten by
What it is: Product with the best value in this price range
Other best choice in a cheaper price range
Other best choice in a pricier price range
Automatically updated every hour based on the scores and prices of all other products we've tested.
: no price info
6.0
Movies
What it is Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
7.7
TV Shows
What it is TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
7.4
Sports
What it is Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
7.9
Video Games
What it is Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
6.1
HDR Movies
What it is HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
7.5
HDR Gaming
What it is HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
8.0
PC Monitor
What it is PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
This tv was replaced by the LG UK7700

Type : LED
Sub-Type
What it is: Type of display technology used by the TV.
When it matters: Different technologies have different performance and are suited to different uses
Good value: IPS maintains good color accuracy at an angle, but has a poor contrast ratio from in front. VA has great picture quality in front, but loses saturation at an angle. OLED maintains good color accuracy at an angle without any of the other issues seen with IPS and VA, as they keep good brightness and contrast at an angle.
:
IPS
Resolution : "4k"

The LG UJ7700 is a good, versatile "4k" UHD TV. It has good viewing angles, and its performance will please both gamers and sports watchers. It isn't as good for movies in a dark room or TV shows though, since it doesn't get that bright in SDR and its contrast and uniformity could be a lot better. Its excellent smart features make it quite versatile. It uses an alternate pixel structure (RGBW) which results in less accurate display of fine details.

Test Results
Design 7.5
Picture Quality 7.0
Motion 6.8
Inputs 9.4
Sound Quality 6.6
Smart Features 8.2
Pros
  • Decently bright
  • Low input lag which is great for gaming
  • Great smart features
Cons
  • Picture quality in a dark room is below average
  • Local dimming feature isn't great
Update 6/20/2018: Added the UK variants
Update 3/12/2018: Converted to Test Bench 1.2. Learn more about our versioned test bench system here.
Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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7.5

Design

Score components: Subjectively assigned
LG UJ7700 Design Picture
Curved : No

The design of the UJ7700 is quite basic, but there are a couple of nice touches. The TV looks quite sleek, with accented edges and a basic stand but the design is definitely a step down from the 2016 UH7700. The stand is almost as wide as the TV, which may be an issue for those with narrow tables. The TV has an average thickness but unfortunately, some inputs out the back may be difficult to access if placed close to a wall.  

Stand
LG UJ7700 Stand Picture

The stand is almost as wide as the TV itself, which may be an issue for those with smaller tables. It looks quite good though and does support the TV well.

Footprint of the 49" TV stand: 9.3" x 42.2"

Back
LG UJ7700 Back Picture
Wall Mount : VESA 300x300

The rear of the TV is similar to the 6 series LG TVs from 2016 such as the UH6500. It is reflective and attracts fingerprints. Many of the inputs face out the rear of the TV which may make them difficult to access if placed close to a wall.

Borders
LG UJ7700 Borders Picture
Borders : 0.55" (1.4 cm)

The borders of the TV are quite thin and look good. The plastic has a silver accent which sets them apart a bit from low end TVs.

Thickness
LG UJ7700 Thickness Picture
Max Thickness : 2.56" (6.5 cm)

The widest part of the TV is at the base, but overall it isn't too thick so won't stick out much if wall-mounted.

Temperature
LG UJ7700 Temperature picture
Maximum Temperature
What it is: The peak temperature found on the TV.
When it matters: If the TV is placed in an enclosed space.
Good value: <35°C
Noticeable difference: 5°C
:
99 °F (37 °C)
Average Temperature
What it is: The average temperature measured on the TV.
When it matters: If the TV is placed in an enclosed space.
Good value: <35°C
Noticeable difference: 5°C
:
91 °F (33 °C)

The TV is warmest at the bottom of the screen, where the backlight LEDs are located. Fortunately, the largest cooling vents are along the bottom edge, so the TV only gets slightly warm to the touch.

6.5 Build Quality
LG UJ7700 Build quality picture

The build quality of the UJ7700 is okay. The TV is almost completely plastic and doesn't look or feel as premium as the UH7700 from 2016.

7.0

Picture Quality

The LG UJ7700 LED TV has an ordinary picture quality. The below average contrast ratio and the ordinary black uniformity mean that the UJ7700 won't be the best performer when set in a dark room. Blacks aren't very deep and dark scenes look a bit washed-out. When set in a bright room, the low contrast ratio isn't as noticeable, but the low peak brightness in SDR and its capacity to deal with reflections won't be enough to effectively fight direct glare. The gray uniformity could be better and dirty screen effect is visible when watching sports like hockey and football. The viewing angle is passable and would be suitable for people with a wide seating area. When it comes to HDR, the UJ7700 has a wide color gamut and good HDR peak brightness, but since the local dimming is very bad, it cannot really compete with other higher end TVs.

6.2 Contrast
What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
LG UJ7700 Checkerboard Picture
Native Contrast
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1158 : 1
Contrast with local dimming
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1161 : 1

The native contrast ratio of the LG UJ7700 is below average for an LED TV but is comparable to other IPS TVs. When set in a dark room, the low contrast ratio makes blacks look more grayish than really black, rendering dark scenes a bill dull and washed-out. This is a bit less problematic when the TV is set in a bright room since the ambient light can make the low contrast ratio a bit less noticeable.

With local dimming turned on, the contrast ratio stays about the same and this is due to the very poor performance of this local dimming feature.

1.0 Local Dimming
What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
Yes
Backlight
What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit TVs have more uniform blacks than some full-array TVs.
:
Edge

The local dimming on the LG UJ7700 is bad. The number of zones is low and each zone spans over a large vertical area. The reaction time is not the fastest we have seen and when turned on in SDR, the local dimming dims the whole screen. Looking at our test video, you can see that the smaller highlights get dimmed a lot. Looking at other aspects that are affected by the local dimming, like the contrast ratio and the black uniformity, it is clear that the implementation of this local dimming is not the best and this is common to most other edge-lit LED TVs. For this TV in particular, the local dimming might cause more harm than good if activated, so it could be a better idea to turn if off or simply set it to 'Low' if you really want to use this feature.

6.4 SDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene Peak Brightness
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
239 cd/m²
SDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
79 cd/m²
SDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
158 cd/m²
SDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
232 cd/m²
SDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
266 cd/m²
SDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
275 cd/m²
SDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
79 cd/m²
SDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
158 cd/m²
SDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
231 cd/m²
SDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
265 cd/m²
SDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
274 cd/m²
SDR ABL
What it is: The coefficient of variation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
Good value: <0.07
Noticeable difference: 0.01
:
0.084

Mediocre SDR peak brightness in the 'Expert (Dark Room)'. The TV's local dimming dims highlights in dark scenes in SDR content, as opposed to making them brighter like it does for HDR content, so we recommend disabling it. The 'Expert (Dark Room)' picture mode, while providing the most options to adjust the picture, is unfortunately quite dim. The 'Expert (Bright Room)' and 'Cinema' picture modes are also dim, but fortunately the 'Standard' and "Game" picture modes are much brighter. A plot of brightness over time in the 'Expert (Dark Room)' and 'Standard' picture modes is shown here.

If the TV appears too dim in a bright room, we recommend using the 'Standard' or 'Game' picture modes, disabling local dimming, using a 'W30' color temperature and using as many of our recommended settings as applicable.

7.2 HDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright living rooms; bright objects; HDR content.
HDR Real Scene Peak Brightness
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. This scene was selected to represent a more realistic movie condition. All measurement are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming, max backlight and over HDR signal. Scene: here.
When it matters: When watching movies or watching TV show in HDR.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
446 cd/m²
HDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, present on screen for a short time; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
647 cd/m²
HDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, present on screen for a short time; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
640 cd/m²
HDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
528 cd/m²
HDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
433 cd/m²
HDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
426 cd/m²
HDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, persistent throughout a scene; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
638 cd/m²
HDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, persistent throughout a scene; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
634 cd/m²
HDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
526 cd/m²
HDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
431 cd/m²
HDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
424 cd/m²
HDR ABL
What it is: The coefficient of variation of the HDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: HDR content with large bright areas, such as HDR gaming
Good value: <0.07
Noticeable difference: 0.01
:
0.028

Decent HDR peak brightness, though not as bright as most high end TVs. The TV's worst case brightness is still fairly bright, and local dimming helps the TV make small highlights in dark scenes even brighter, as shown by our smaller window tests. The 2% white window is the brightest test, while on last year's UH7700 it was the dimmest, indicating very different local dimming behavior. However, we recommend disabling local dimming as on this TV it adds a lot of visible blooming. A plot of brightness over time is shown here.

Update 07/07/2017: Certain settings and modes make the TV brighter or dimmer, see our additional review notes below.

7.2 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
LG UJ7700 50% Uniformity Picture
50% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
3.260 %
50% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.210 %
LG UJ7700 5% Uniformity Picture
5% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.434 %
5% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.093 %

The gray uniformity could be better on the LG UJ7700. Looking at the 50% gray uniformity test picture, large darker bands are visible and both sides are also darker. Watching our sports test clip during the testing, dirty screen effect is visible, and this in various sports like hockey and soccer.

Looking at the 5% gray test picture, not much stands out and the overall picture looks pretty even, which is a good thing.

6.3 Viewing Angle
What it is: Color accuracy when viewed from the side.
When it matters: Large living rooms with multiple viewing positions.
Score components:
LG UJ7700 Color Shift Picture
Color Shift
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
24 °
LG UJ7700 Brightness Picture
Brightness
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
31 °
LG UJ7700 Black Level Picture
Black Level
What it is: Angle where the black level drops to 50% of the black level directly in front of the TV. 0 ° means directly facing the TV. Measurements are up to a maximum of 75 °.
When it matters: Large living rooms with multiple viewing positions.
Good value: > 50°
Noticeable difference: 10°
:
75 °

Mediocre viewing angle. Better than almost all VA TVs but not as good as most IPS TVs. The black level barely changes at an angle, but colors shift and brightness decreases rapidly when the TV is viewed at an angle. Last year's UH7700 and UH8500 had a very similar viewing angle.

4.7 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
LG UJ7700 Native Black Uniformity Picture
Native Std. Dev.
What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: < 1%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
1.880 %
LG UJ7700 Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
Good value: < 1%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
5.808 %

The UJ7700 overall black uniformity is bad. When the local dimming is turned off, the screen is pretty even with only a bit more clouding in the upper right region and also the top edge is a bit brighter. Note here that the test picture does look more grayish than really black, but the black uniformity test is not about the level of black but more the evenness of the black.

When the local dimming is turned on, the black uniformity is very bad, as you can see on our test picture. There is a lot of blooming near the white cross of our test image, making the center of the screen way more bright than both sides. This is why the standard deviation number is so big when compared to the native standard deviation. Since the local dimming is so bad on this TV when set to max, it will cause more issues than if it was completely turned off. In a case like this, it is often recommended to completely turn off this feature.

8.4 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components:
LG UJ7700 Reflections Picture LG UJ7700 Average Room Off Picture LG UJ7700 Bright Room Off Picture
Screen Finish
What it is: Type of coating on the screen.
When it matters: Bright objects in the direct reflection path (for example, opposite the TV).
Good value: Glossy is good for ambient light, but not for direct reflections.
:
Semi-gloss
Total Reflections
What it is: The amount of light which is reflected off the screen, in all directions.
When it matters: When watching TV in a bright room, with lamps, windows or walls which reflect directly off the screen.
Good value: 4.5 %
Noticeable difference: 0.5 %
:
3.4 %
Indirect Reflections
What it is: The amount of light reflected off the screen, ignoring direct (mirror-like) reflections
When it matters: Watching TV in a bright room, without sunlight or lamps directed at the TV
Good value: 1.0 %
Noticeable difference: 0.5 %
:
0.8 %

The UJ7700 is quite good at handling reflections. It has a semi-gloss finish which diffuses reflects across the screen, reducing their intensity. This should be fine for an average room, but may be an issue for a very bright room.

6.4 Pre Calibration
What it is: TV's color accuracy before a full calibration. Only the picture mode, color temperature, and backlight level were changed.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
LG UJ7700 Pre Calibration Picture LG UJ7700 Pre Gamma Curve Picture LG UJ7700 Pre Color Picture
Picture Mode
What it is: The picture mode used to do the 'Pre Calibration' measurements.
:
Expert (Dark Room)
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
4.39
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
3.46
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.12
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color temperature use in the TV and film industry as program, film, and photography directors usually work on monitors calibrated on the 6500k color temperature and do their color correction base on what they see on those monitors.
When it matters: To get the most accurate picture when watching TV shows, movies or video games. This is particularly for skin tones.
Good value: 6500K
Noticeable difference: 400K
:
5972 K

Out of the box, the UJ7700 is not that accurate and home-enthusiasts may notice some inaccuracies. The white balance is on the warm side and the dE is pretty high plus the gamma is not tracking our 2.2 target very well. When it comes to the color accuracy, the accuracy is average at best with the cyan colors being the worst of the lot.

9.4 Post Calibration
What it is: TV's color accuracy after a full calibration with a spectrophotometer.
When it matters: All video on a TV that has been professionally calibrated. This isn't that useful, because most TVs can achieve a pretty good calibration if you spend enough time on them.
Score components:
LG UJ7700 Post Calibration Picture LG UJ7700 Post Gamma Curve Picture LG UJ7700 Post Color Picture
Picture Mode
What it is: The picture mode used to do the calibration. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Expert (Dark Room)
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.26
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.46
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.19
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color temperature use in the TV and film industry as program, film, and photography directors usually work on monitors calibrated on the 6500k color temperature and do their color correction base on what they see on those monitors.
When it matters: To get the most accurate picture when watching TV shows, movies or video games. This is particularly for skin tones.
Good value: 6500K
Noticeable difference: 400K
:
6714 K

The calibration process on the LG UJ7700 was a bit longer than usual, especially while doing the white balance and even with the 20 point correction, the lower end could not be corrected completely. The gamma was flattened to track more closely to our 2.2 target, but with a small imperfection that matches the low end of the white balance.

The color space management on the UJ7700 was pretty good and the total color dE was halved, which is very good. Most of the colors, including the cyan, were tracking more closely to their targets after calibration. In the end, the calibration was worth the effort, since out of the box, it was pretty inaccurate.

You can see our recommended settings here.

8.0 480p Input
What it is: Quality of a 480p input.
When it matters: Standard definition TV, DVDs.
Score components: Subjectively assigned
LG UJ7700 480p Picture

Low quality content such as DVDs are upscaled well. Details are preserved and the image isn't too soft. Some halo artifacts can be seen around straight lines.

8.0 720p Input
What it is: Quality of a 720p input.
When it matters: HD channels, some streaming videos.
Score components: Subjectively assigned
LG UJ7700 720p Picture

720p content such as cable is upscaled well. The image remains clear.

9.0 1080p Input
What it is: Quality of a 1080p input.
When it matters: Blu-rays, streaming video, video files, video games.
Score components: Subjectively assigned
LG UJ7700 1080p Picture

1080p content looks good. The image is crisp and detailed.

8.0 4k Input
What it is: Quality of a 4k UHD input.
When it matters: Streaming video, UHD Blu-rays, some PCs.
Score components: Subjectively assigned
LG UJ7700 4k Picture

Unlike the UH7700 from 2016, the UJ7700 has a less accurate sub-pixel structure (RGBW). This results in slightly less clear text when viewed from up-close. It is not an issue from farther away, but can be seen in the close up pixel photo here.

7.4 Color Gamut
What it is: How many colors the TV can display.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
Score components:
Wide Color Gamut
What it is: Whether the TV has an option to enable wide color gamuts.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
:
Yes
LG UJ7700 Color Gamut DCI-P3 Picture
DCI P3 xy
What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
79.07 %
DCI P3 uv
What it is: Coverage of the DCI P3 colorspace on CIE 1976 u' v'.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
87.95 %
LG UJ7700 Color Gamut Rec.2020 Picture
Rec 2020 xy
What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
58.71 %
Rec 2020 uv
What it is: Coverage of the Rec.2020 colorspace on CIE 1976 u' v'.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
68.54 %
LG UJ7700 EOTF

Wide color gamut. Not as wide as most high end TVs but wider than last year's UH7700. In HDR content the red, blue and green primaries all fall short of their targets, especially the green, as most TVs struggle with deep greens. The TV isn't very accurate at showing the colors in the middle of the gamut, but is more accurate with DCI P3 colors.

The TV's EOTF follows the PQ curve fairly closely, but when shown our darkest grey slide with local dimming on high the TV turned the picture off completely. This shouldn't be a problem during normal usage though as this is a very extreme case. This EOTF was measured in the Cinema picture mode, the EOTF for game mode is shown here.

Update 07/07/2017: Certain settings and modes make the TV brighter or dimmer, see our additional review notes below.

5.8 Color Volume
What it is: How many colors a TV can display at different luminosity levels.
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
LG UJ7700 P3 Color Volume ITP Picture
Normalized DCI P3 Coverage ITP
What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80%
Noticeable difference: 5%
:
66.7 %
10,000 cd/m² DCI P3 Coverage ITP
What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
34.9 %
LG UJ7700 2020 Color Volume ITP Picture
Normalized Rec 2020 Coverage ITP
What it is: How much of the Rec. 2020 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80 %
Noticeable difference: 5 %
:
48.8 %
10,000 cd/m² Rec 2020 Coverage ITP
What it is: How much of the Rec 2020 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
23.4 %

Sub-par color volume. The TV's RGBW pixel structure prevents it from making bright colors anywhere near as bright as it makes white. The TV's local dimming helps it darken dim colors, but its very low number of zones prevent it from darkening the center of our black-with-white-border slide, showing the poor black level of its IPS panel.

7.9 Gradient
What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
LG UJ7700 Gradient Picture
Color Depth
What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like UHD Blu-ray players. Won't matter for cable TV, regular Blu-ray movies, video game consoles or content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
10 Bit
Red (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit red shades.
When it matters: Details in skin tones, sunsets, and other reddish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.117 dE
Green (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit green shades.
When it matters: Details in ocean shades and other greenish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.137 dE
Blue (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit blue shades.
When it matters: Details in skies, water and other blueish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.091 dE
Gray (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit gray shades.
When it matters: Details in dull colors, such as shadows, glow and urban scenes. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.098 dE

The LG UJ7700 can display our gradient test image very smoothly and without any banding normally seen on 8-bit TVs. Overall, only very little imperfections can be seen in the darker greens, which is very good and banding should not be too problematic on this LG TV.

9.9 Temporary Image Retention
What it is: How much a static image is retained on a TV screen after a certain amount of time.
When it matters: When watching TV show, playing video games or when using your TV as a PC monitor.
LG UJ7700 Image Retention Picture
IR after 0 min recovery
What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.03 %
IR after 2 min recovery
What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0.00 %
IR after 4 min recovery
What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 6 min recovery
What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 8 min recovery
What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 10 min recovery
What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %

The UJ7700 does have some image retention, but it is quite minor, which is a very good result for an IPS TV since they are usually more prone to image retention. As you can see on our test picture, the retention right after the burn-in scene is really faint and after the first 2 minutes of recovery, is already gone. For this IPS TV, this is a very good score and people like gamers should not really be worried.

10 Permanent Burn-In Risk
What it is: The risk of developing a persistent image retention, also known as burn-in, after being exposed to a static image for a prolonged time
When it matters: When watching TV shows, playing video games or when using your TV as a PC monitor where static content is present
Score components:
Permanent Burn-In Risk
What it is: If the TV faces a risk of developing permanent burn-in after being expose, for a long period of time, to static images.
When it matters: When watching TV shows with static logos or banners (news or sports channels), when playing video games with a HUD (head up display), and when using a TV as a PC monitors.
:
No

Although some IPS panels can suffer from temporary image retention, this doesn't appear to be permanent as seen in our long-term test.

Pixels
LG UJ7700 Pixels Picture

The less accurate RGBW sub-structure means that some straight lines (such as text for PC use) may appear jagged. This is the same behaviour as the UH6500, visible in text here.

6.8

Motion

The motion handling of the UJ7700 is okay. It has a fast response time, resulting in only a short trail of blur following moving objects. Motion isn't as smooth as some other TVs though as the backlight flickers by default. It is not possible to increase the amount of flicker to clear up fast moving content. Those sensitive to judder may notice it when watching movies from a HTPC or cable, but most people won't notice these minor cadence issues. Unlike the UH7700, this TV has a 60Hz panel so can't produce as strong of a soap opera effect.

7.6 Response Time
What it is: Amount of blur in fast motion.
When it matters: Sports, video games.
Score components:
LG UJ7700 Motion Blur Picture LG UJ7700 Response Time Chart
80% Response Time
What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: Fast movement.
Good value: < 8 ms
Noticeable difference: 4 ms
:
8.4 ms
100% Response Time
What it is: How quickly pixels can fully transition from one color to another.
When it matters: Fast movement.
Good value: < 20 ms
Noticeable difference: 10 ms
:
17.8 ms

The response time is good, so only a short trail can be seen following fast-moving objects. This is similar to the UH7700 from 2016.

4.0 Flicker-Free
What it is: How noticeable flicker is on the screen, when all optional flicker has been disabled.
When it matters: All usages, but particularly when viewing fast motion (such as in sports and video games) or when using the TV as a PC monitor.
Score components:
LG UJ7700 Backlight chart
Flicker-Free
What it is: Whether the screen will be perceived as having no flicker during normal viewing conditions.
When it matters: When flicker is especially bothersome, such as when using the TV as a PC monitor.
Good value: Yes
:
No
PWM Dimming Frequency
What it is: The flicker frequency of the screen, when all optional flicker has been disabled.
When it matters: All usages, but particularly when viewing fast motion (such as in sports and video games) or when using the TV as a PC monitor.
Good value: 0 Hz or very high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
120 Hz

The TV uses PWM at 120Hz to dim the backlight. This results in duplications following fast-moving objects, visible in the motion blur box. The backlight oscilloscope was taken in HDR mode, as the TV doesn't utilize its full brightness in SDR. 100% backlight in SDR looks like this.

5.4 Black Frame Insertion (BFI)
What it is: How effective the TV's flickering capabilities are in making motion look clearer, when flicker is desired.
When it matters: When flicker is desired by the user. Flicker is especially useful to make motion look clearer when viewing 60 fps content (sports, video games) and when using motion interpolation.
Optional BFI
What it is: Option to turn the screen black between frames.
When it matters: When flicker is desired by the user. Flicker is especially useful to make motion look clearer when viewing 60 fps content (sports, video games) and when using motion interpolation.
Good value: Yes
:
No
Min Flicker for 60 fps
What it is: Lowest possible frequency of flickering pattern when playing 60 fps content.
When it matters: When viewing fast motion such as sports and video games.
Good value: 60 Hz
Noticeable difference: 20 Hz
:
120 Hz
60 Hz for 60 fps
What it is: Whether the screen can flicker at 60 Hz when playing 60 fps content.
When it matters: When playing 60 fps content, such as sports and video games.
Good value: Yes
:
No
120 Hz for 120 fps
What it is: Whether the screen can flicker at 120 Hz when playing 120 fps content.
When it matters: When playing 120 fps content, such as when using motion interpolation on a 120 Hz TV.
Good value: Yes
:
N/A
Min Flicker for 60 fps in Game Mode
What it is: Lowest possible frequency of flickering pattern when playing 60 fps content in Game Mode.
When it matters: When playing video games with fast motion.
Good value: 60 Hz
Noticeable difference: 20 Hz
:
120 Hz

The UJ7700 lacks a setting to reduce its flicker frequency to 60 Hz during 60 fps content, although its 120 Hz backlight does help somewhat to make motion look more clear.

7.0 Motion Interpolation
What it is: Also known as 'Soap Opera Effect'. It is an optional feature that increases the frame rate of the video, smoothing movement.
When it matters: If you like the look of smoothed video. Not everyone does.
LG UJ7700 Motion Interpolation (30 fps) Picture
Motion Interpolation (30 fps)
What it is: Whether the TV can take a 30 fps input and heighten the frame rate to at least 60 fps.
When it matters: 30 fps or lower videos. Includes movies, TV shows, some video games.
:
Yes
Motion Interpolation (60 fps)
What it is: Whether the TV can take a 60 fps input and heighten the frame rate to at least 100 fps.
When it matters: 60 fps videos. Includes some video games, some sports channels.
:
No

The UJ7700 has a 60Hz panel and can interpolate lower frame rate content by setting 'TruMotion' to 'User' and increasing the 'De-Judder' slider. Fans of motion interpolation may be disappointed that it can't produce as strong of a soap opera effect as 120Hz TVs such as the UH7700 from 2016.

8.1 Stutter
What it is: Jarring effect caused by static frame time during motion sequences
When it matters: When watching content with long panning shots and other smooth movement
Frame Hold Time @ 24 fps
What it is: Time that frame is static during 24Hz videos such as movies
When it matters: When watching movies and other low frame rate content which contain panning shots
Good value: < 24 ms
Noticeable difference: 5 ms
:
23.9 ms
Frame Hold Time @ 60 fps
What it is: Time that frame is static during 60 fps content such as TV shows
When it matters: When watching 60 fps content containing slow panning shots (such as field sports)
Good value: < 24 ms
Noticeable difference: 5 ms
:
0.0 ms

The LG UJ7700 is great at displaying content without stutter, even low frame rate content such as 24p movies. The response time of the panel helps to smooth the transition between frames, which is good.

7.8 24p Judder
What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Judder-Free 24p
What it is: Judder-free movies over 24p signal.
When it matters: Blu-ray and DVD movies; 24 hz PC signal.
:
Yes
Judder-Free 24p via 60p
What it is: Judder-free movies over 60p signal.
When it matters: Movies from streaming devices (Apple TV, Fire TV, etc.); 60 hz PC signal.
:
No
Judder-Free 24p via 60i
What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
No
Judder-Free 24p via Native Apps
What it is: Judder-free movies when playing from native apps.
When it matters: Movies from streaming native apps (Netflix, Amazon TV, etc.).
:
Yes

The LG UJ7700 can display 24p movies without judder when they are played from 24p sources like DVD or Blu-ray players and only when the 'Real Cinema' option is turned on (Settings--> Picture options). On the other hand, the UJ7700 can't remove judder from 24p movies when they are played from 60p/60i sources like cable or satellite boxes.

0 Variable Refresh Rate
What it is: How frequently the TV can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like HDMI Forum's Variable Refresh Rate.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native Refresh Rate
What it is: The out-of-the-box maximum refresh rate; how frequently the TV can refresh and show new frames.
When it matters: When playing content with a frame rate that matches the TV's refresh rate (ex. 60 fps on a 60 Hz TV, 120 fps on a 120 Hz TV), or when using the TV's motion interpolation feature (soap opera effect).
Good value: 60 Hz
:
60 Hz
Variable Refresh Rate
What it is: Feature that allows the TV to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable when gaming where constant fluctuation in framerate cause distracting artifacts.
:
No
4k VRR Maximum
What it is: The maximum frequency covered by the Variable Refresh Rate feature of the TV when the input signal is 4k.
When it matters: Any time the VRR feature is enabled and 4k is sent.
Good value: Matches maximum refresh rate at 4k.
Noticeable difference: 10 Hz
:
N/A
4k VRR Minimum
What it is: The lowest frequency covered by the TV's Variable Refresh Rate feature when the input signal is 4k.
When it matters: When using the VRR feature of the TV at lower frame rates when sending a 4k signal.
Good value: 30 Hz
:
N/A
1080p VRR Maximum
What it is: The maximum frequency covered by the Variable Refresh Rate feature of the TV when the input signal is 1080p.
When it matters: Any time the VRR feature is enabled and 1080p is sent.
Good value: Matches maximum refresh rate at 1080p.
Noticeable difference: 10 Hz
:
N/A
1080p VRR Minimum
What it is: The lowest frequency covered by the TV's Variable Refresh Rate feature when the input signal is 1080p.
When it matters: When using the VRR feature of the TV at lower frame rates when sending a 1080p signal.
Good value: 30 Hz
:
N/A
VRR Supported Connectors
What it is: The inputs which support a variable refresh rate (eg. HDMI, DisplayPort)
When it matters: When gaming with different consoles or graphics cards.
:
N/A

This TV has a 60Hz panel and doesn't support any variable refresh rate features.

9.4

Inputs

Score components:

The UJ7700 supports most common input signals, including HDR, and can properly display most content. It has very low input lag that should please nearly any gamer.

9.8 Input Lag
What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
1080p @ 60Hz
What it is: Lowest input lag possible on TV with a 1080p @ 60Hz @ 4:2:2 input.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.4 ms
1080p @ 60Hz + HDR
What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz @ 4:2:2 @ 10 bit with HDR.
When it matters: HDR video games from a console outputting a 1080p signal.
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.3 ms
1080p @ 60Hz Outside Game Mode
What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz @ 4:2:2 in a fully featured picture mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms
:
47.6 ms
1080p @ 120Hz
What it is: Lowest input lag possible on TV with a 1080p @ 120Hz input.
When it matters: When the TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
4k @ 60Hz
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:2:0.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.4 ms
4k @ 60Hz + HDR
What it is: Lowest input lag possible when displaying 4k @ 60Hz @ 4:2:0 @ 10 bit signal with HDR.
When it matters: HDR Video games.
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.4 ms
4k @ 60Hz @ 4:4:4
What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz with proper 4:4:4 chroma subsampling. The test is usually conducted with a 4k @ 60 Hz @ 4:4:4 signal, but a 4k @ 60 Hz @ Full RGB signal may be used if it's required for the TV to show proper 4:4:4 chroma subsampling.
When it matters: PC Monitor
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.4 ms
4k @ 60Hz @ 4:4:4 + 8 bit HDR
What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz @ 8 bit + HDR with proper 4:4:4 chroma subsampling. The test is usually conducted with a 4k @ 60 Hz @ 4:4:4 @ 8 bit signal, but a 4k @ 60 Hz @ Full RGB @ 8 bit signal may be used if it's required for the TV to show proper 4:4:4 chroma subsampling.
When it matters: PC Monitor with an HDR capable graphic card
Good value: < 40 ms
Noticeable difference: 15 ms
:
12.3 ms
4k @ 60Hz Outside Game Mode
What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz @ 4:2:0 in a fully featured picture mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms
:
64.3 ms
4k With Interpolation
What it is: Lowest input lag for 4k @ 60 Hz @ 4:2:0 content when the motion interpolation feature is turned on.
When it matters: When you want to play video games with the Soap Opera Effect enabled.
Good value: < 40 ms
Noticeable difference: 15 ms
:
97.6 ms
4k @ 120 Hz
What it is: Lowest input lag possible on TV with a 4k @ 120Hz input.
When it matters: When the TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
4k with Variable Refresh Rate
What it is: Lowest input lag possible on the TV when its Variable Refresh Rate feature is enabled and it is sent a 4k signal.
When it matters: When gaming with a device which supports variable refresh rates, such as the Xbox One X or a PC.
:
N/A
1080p with Variable Refresh Rate
What it is: Lowest input lag possible on the TV when its Variable Refresh Rate feature is enabled and it is sent a 1080p signal.
When it matters: When gaming with a device which supports variable refresh rates, such as the Xbox One X or a PC.
:
N/A

Outstanding low input lag, one of the best we've tested. In the Game picture mode, or in any picture mode when the input's icon is changed to PC, the TV has an excellent input lag of ~12 ms, which should please nearly any gamer. However when HDR content is played while the input’s icon is 'PC', the TV acts as though the icon wasn't 'PC', so the only picture mode with low input lag in HDR is Game mode.

Update 08/10/2017: webOS 3.6 fixed this PC mode HDR issue, HDR now plays properly in PC mode, with proper 4:4:4 color. All PC mode picture modes have low input lag, even in HDR.

6.7 Supported Resolutions
What it is: Different resolutions supported by TV.
When it matters: PC monitor usage.
Score components:
  • 17% 1080p @ 60Hz @ 4:4:4
  • 17% 1080p @ 120Hz
  • 17% 1440p @ 60Hz
  • 17% 4k @ 30Hz @ 4:4:4
  • 16% 4k @ 60Hz
  • 16% 4k @ 60Hz @ 4:4:4
1080p @ 60Hz @ 4:4:4
What it is: Crisp text on 1080p @ 60 hz signal.
When it matters: PC productivity and 60 fps gaming.
:
Yes
1080p @ 120Hz
What it is: 120 fps 1080p signal supported.
When it matters: PC gaming.
:
No
1440p @ 60Hz
What it is: 60 fps 1440p signal supported.
When it matters: PC productivity and gaming.
:
No
4k @ 30Hz @ 4:4:4
What it is: Crisp text on 4k @ 30 hz signal.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz
What it is: 60 fps 4k signal supported.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz @ 4:4:4
What it is: Crisp text on 4k @ 60 hz signal.
When it matters: Productivity and 60 fps gaming in 4k.
:
Yes
4k @ 120Hz
What it is: 4k 120Hz signal supported
When it matters: PC gaming
:
No

Most common resolutions are supported. 4k @ 60 Hz @ 4:2:2 or 4:4:4 color is only supported when 'HDMI ULTRA HD Deep Color' is enabled for that input. 4:4:4 color is only properly displayed when the input's icon is set to PC. When HDR content is played when the input's icon is set to PC, the TV acts like the icon isn't PC, making the TV unable to properly display 4:4:4 color in HDR.

Update 08/10/2017: webOS 3.6 fixed this PC mode HDR issue, HDR now plays properly in PC mode, with proper 4:4:4 color.

Although the TV can properly display 4:4:4 color, its less accurate RGBW pixel structure produces artifacts when showing fine color detail. This is visible as jagged lines in our chroma 4:4:4 test image, shown here for the RGBW UH6500, compared to the perfect presentation of a true RGB TV such as the X750D shown here. This isn't a huge concern, but may be noticeable in some cases.

Side Inputs
Rear Inputs
Total Inputs
HDMI : 4
USB : 2
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (shared)
Composite In : 1 (shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0
Inputs Specifications
HDR10
What it is: Standard HDR format.
When it matters: Most common format. All UHD Blu-ray discs are required to have it.
:
Yes
Dolby Vision
What it is: Better format, due to its dynamic nature.
When it matters: Dolby Vision mastered content. Current available from streaming services (Netflix, Amazon Video), some Blu-Ray players, the Apple TV 4k and ChromeCast Ultra.
:
Yes
HLG
What it is: HLG or Hybrid Log Gamma is a broadcast HDR format.
When it matters: HLG capable sources such as Youtube or OTA broadcasts in specific regions. Backwards compatible with SDR TVs.
:
Yes
3D
What it is: Optional 3D video capability on TV.
When it matters: 3D movies & videos.
:
No
5.1 Passthrough ARC Dolby Digital
What it is: TV can receive and pass Dolby Digital 5.1 signal to receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough ARC DTS
What it is: TV can receive and pass DTS 5.1 signal to receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough Optical Dolby Digital
What it is: TV can receive and pass Dolby Digital signal to receiver via digital optical.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
5.1 Passthrough Optical DTS
What it is: TV can receive and pass DTS signal to receiver via digital optical.
When it matters: 5.1 audio on DVDs and Blu-rays.
:
Yes
HDMI 2.0 Full Bandwith
What it is: HDMI 2.0 is the main used HDMI standard and supports a range of video resolutions and refresh rates up to 4k@60Hz, with a total maximum bandwidth up to 18Gbps.
:
Yes (HDMI 1,2,3,4)
HDMI 2.1 Full Bandwidth
What it is: HDMI 2.1 is the latest update to the HDMI standard and supports a range of higher video resolutions and refresh rates including 8K60 and 4K120, and resolutions up to 10K. Dynamic HDR formats are also supported, and bandwidth capability is increased up to 48Gbps.
:
No
ARC
What it is: Audio Return Channel (ARC) enables a TV to transmit, via an HDMI cable, audio data to an A/V receiver, without the need for any extra audio cables.
When it matters: When connecting your audio/video receiver directly to your TV via an HDMI cable.
:
Yes (HDMI 2)
USB 3.0
What it is: USB 3.0 is the latest USB standard which can transfer data up to 5 Gbit/s, and is easily recognizable due to its blue color-coding of the connector.
:
No
HDCP 2.2 : Yes (HDMI 1,2,3,4)
CEC : Yes
MHL : No
Variable Analog Audio Out : No
Wi-Fi Support : Yes (2.4 GHz, 5 GHz)
6.6

Sound Quality

What it is: How well and accurately the audio is reproduced.
When it matters: When a good and accurate sound reproduction is needed.
Score components:

The UJ7700's sound quality is about average for a TV. It won't surprise anyone with its quality, but most content shouldn't have any issues. Like other high-end LG TVs with the 'Magic Remote', it has a room calibration feature that uses the microphone on the remote, which does make a good difference.

6.6 Frequency Response
What it is: How accurately the sound level of each frequency is being produced.
When it matters: For a balanced and neutral sound.
LG UJ7700 Frequency Response
Low-Frequency Extension
What it is: The lowest frequency at which the frequency response reaches -3dB of the target response.
When it matters: Movies, Gaming. Shows how extended the bass is.
Good value: < 60Hz
Noticeable difference: 10Hz
:
89.80 Hz
Std. Dev. @ 70
What it is: The amount of deviation (weighted standard deviation) in frequency response measured at 70dB SPL, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at quiet listening levels
Good value: < 4 dB
Noticeable difference: 0.5 dB
:
3.48 dB
Std. Dev. @ 80
What it is: The amount of deviation (weighted standard deviation) in frequency response measured at 80dB SPL, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at moderate listening levels
Good value: < 4 dB
Noticeable difference: 0.5 dB
:
3.07 dB
Std. Dev. @ Max
What it is: The amount of deviation (weighted standard deviation) in frequency response measured with the TV at maximum volume, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at under maximum load
Good value: < 4 dB
Noticeable difference: 2 dB
:
5.03 dB
Max
What it is: Maximum volume reached by the TV at their optimum viewing distance (size dependent)
When it matters: For listening to loud audio.
Good value: > 88 dB
Noticeable difference: 2 dB
:
86.3 dB SPL
Dynamic Range Compression
What it is: The amount of difference between the TVs frequency response performance at 70dB SPL and Max dB SPL. Too much compression will result in pumping in the sound.
When it matters: When an accurate and free-of-pumping performance is required at higher volumes
Good value: < 3dB
Noticeable difference: 0.5
:
6.95 dB

Decent frequency response and maximum volume. Maximum volume suffers from very strong amounts of compression. The bass extension falls a bit short as well.

6.7 Distortion
What it is: Deformation of an output signal compared to its input, usually clipping, harmonic distortion, or inter-modulation distortion caused by non-linear behavior of the sound system.
When it matters: When a clean, pure and transparent reproduction is desired.
Score components:
LG UJ7700 Total Harmonic Distortion
Weighted THD @ 80
What it is: The overall amount of harmonic distortion measured at 80dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: < 0.100
Noticeable difference: 0.100
:
0.082
Weighted THD @ Max
What it is: The overall amount of harmonic distortion measured at the TV's maximum SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: < 0.100
Noticeable difference: 0.100
:
0.979
IMD @ 80
What it is: The average amount of inter-modulation distortion produced by the TV under maximum load. The percentage shown here is the average result of 3 separate test signals/standards: SMPTE, DIN, & CCIF
When it matters: When a clean and free of aliasing reproduction is desired
Good value: < 5%
Noticeable difference: 2
:
2.09 %
IMD @ Max
What it is: The average amount of inter-modulation distortion produced by the TV under maximum load. The percentage shown here is the average result of 3 separate test signals/standards: SMPTE, DIN, & CCIF
When it matters: When a clean and free of aliasing reproduction is desired
Good value: < 5%
Noticeable difference: 2
:
14.49 %

The UJ7700 produces a fair amount of distortion. THD is elevated even on more reasonable levels.

8.2

Smart Features

Score components:
  • 42% Interface
  • 2% Ad-Free
  • 37% Apps and Features
  • 16% Remote
  • 3% Remote App
LG UJ7700 Smart TV Picture
Smart OS : WebOS
Version : 3.5

The UJ7700 runs LG's webOS smart platform, which has a lot of low-level options for controlling the TV while still being easy to navigate. The remote has a few buttons that open quick menus, giving fast access to basic options, yet digging deeper into the interface reveals a lot of advanced options. When the remote is pointed at the screen, a cursor follows its movement, enabling options to be selected directly. The remote also has a microphone for voice commands.

8.5 Interface
What it is: The usability, features and performance of the main interface of the TV, not including the interfaces of the apps themselves.
When it matters: Anytime when using the TV, but especially when changing settings and using apps.
Score components: Subjectively assigned
Ease of Use
What it is: How easy the interface is to navigate, affected by the organization of its layout, placing frequently accessed elements in areas that are faster to access, etc.
When it matters: When using the smart features.
:
Easy
Smoothness
What it is: How smooth the interface is to navigate, affected by lag and frame drops.
When it matters: When using the smart features.
:
Average
Time Taken to Select YouTube
What it is: How long it takes to select YouTube for launch, starting from HDMI 1 input, when YouTube is placed first on the list of apps or added as a shortcut. This does not include app launch time, and does not use a fixed YouTube button on a remote. This serves as an indication of the time needed to select any app.
When it matters: When launching any app.
:
2 s
Time Taken to Change Backlight
What it is: The time it takes to navigate to the 'Backlight' setting ('Brightness' on Sony TVs). This serves as an indication of how long it takes to navigate to basic TV settings.
When it matters: When changing TV settings.
:
7 s
Advanced Options
What it is: Whether advanced options and settings are available, such as color calibration.
When it matters: When customizing the TV and using the smart features.
:
Many
0 Ad-Free
What it is: Whether or not ads can be found on the TV's smart platform.
When it matters: When using the smart features.
Score components:
LG UJ7700 Ads Picture
Ads
What it is: Whether the TV's main interface has ads. This does take into account ads in third-party apps.
When it matters: When using the smart features.
:
Yes
Opt-out
What it is: Whether you can opt out of the ad services or not. A TV only passes this test if it allows you to remove them completely, not only disable the personalized advertising.
When it matters: When using the smart features.
:
No
Suggested Content in Home
What it is: Whether suggested content appears in the TV's home menu or main menu. Suggested content can include recommended movies, TV shows, YouTube videos etc.
:
Yes
Opt-out of Suggested Content
What it is: Whether the suggested content feed in the home menu can be removed or hidden
:
No

The TV has ads in the LG Content Store and voice search results, and they cannot be opted out of.

8.0 Apps and Features
What it is: The usability, features and performance of apps and other smart features.
When it matters: Only when using smart features such as apps, casting and USB playback.
Score components: Subjectively assigned
LG UJ7700 Apps Picture
App Selection
What it is: The number and variety of apps available to download for the smart platform.
When it matters: When downloading new apps.
:
Many
App Smoothness
What it is: How smooth it feels to navigate the interfaces of apps, affected by lag and frame drops.
When it matters: When using apps.
:
Average
Cast Capable
What it is: Whether apps on a phone or tablet can cast content to the TV.
:
Yes
USB Drive Playback
What it is: Whether the TV can play content from a drive connected to one of the TV's USB ports.
:
Yes
USB Drive HDR Playback
What it is: Whether HDR files played from a USB drive can be displayed properly.
:
Yes
HDR in Netflix
What it is: Whether HDR content on Netflix can be played back in HDR using the native Netflix app.
:
Yes
HDR in Amazon Video
What it is: Whether HDR content on Amazon Video can be played in HDR using the native Amazon Video app.
:
Yes
HDR in YouTube
What it is: Whether HDR content on YouTube can be played in HDR using the native YouTube app.
:
Yes

The TV comes preloaded with many popular apps such as Netflix, YouTube and Amazon Video. Many more apps and other content can be downloaded from the LG Content Store.

9.0 Remote
What it is: The usability and features of the TV's physical remote.
Score components: Subjectively assigned
LG UJ7700 Remote Picture
Size
What it is: How big the remote is
:
Large
Voice Control
What it is: The capabilities of the TV's voice control feature
:
Content Search Only
CEC Menu Control
What it is: Whether the remote can act as a universal remote for HDMI CEC enabled devices. This was tested on our Samsung UBD-K8500 4K Blu-ray player, and may not be valid for other CEC devices as implementations vary by manufacturer.
:
Yes
Other Smart Features
What it is: Whether the remote has any other smart features, such as a pointer, universal remote support for non HDMI CEC devices, etc.
:
Yes

The UJ7700 uses LG's excellent Magic Remote, which might be the best smart remote we've used. When the remote is pointed at the TV a cursor follows its movement, allowing deft users to quickly select their target. The remote's microphone is used for voice commands, which can do many things like changing settings and searching for content. At the center of the navigation pad is a scroll wheel that doubles as the select button, so the user can scroll to the option they want and quickly select it without moving their thumb.

7.0 Remote App
What it is: The features of the official phone and tablet app for the TV.
Score components: Subjectively assigned
LG UJ7700 Remote App Picture
Acts as the Remote
What it is: Whether the remote app can emulate all the buttons of the physical remote.
:
Yes
Directly Launches Apps and Inputs
What it is: Whether the remote app can directly launch the TV's apps and change between its inputs, without requiring any interaction with menus on the TV.
:
Both
Inputs Text in YouTube
What it is: Whether the remote app can enter text for YouTube searches.
:
No
Inputs Text in Netflix
What it is: Whether the remote app can enter text for Netflix searches.
:
No
Streams Device Files
What it is: Whether the remote app can stream files from the phone or tablet to the TV, files such as pictures, music and video.
:
Yes
Controls TV Settings
What it is: Whether the app can change all or some of the settings on the TV, such as the backlight.
:
No
Voice Control
What it is: Whether the remote can send voice commands to the TV.
:
No
TV Controls
LG UJ7700 Controls Picture

The TV has five physical buttons (up, down, right, left, enter), that allow controlling nearly anything the remote can.

In The Box
LG UJ7700 In The Box Picture

  • Manual
  • Batteries
  • Remote
  • Cable management strap

Misc
Power Consumption : 43 W
Power Consumption (Max) : 107 W
Firmware : 03.50.90

Differences between Sizes and Variants

We tested the 49" (49UJ7700). For the most part, we expect our review to be valid for other sizes of the UJ7700.

If someone comes across a different type of panel or if their LG UJ7700 doesn't correspond to our review, let us know and we will update the review.

Size US UK
43" N/A 43UJ750V
49" 49UJ7700 49UJ750V
55" 55UJ7700 55UJ750V
60" 60UJ7700 60UJ750V
65" 65UJ7700 65UJ750V

Compared to other TVs

LG UJ7700 Group Shot Picture
Top left: Sony X800E (XBR43X800E). Bottom left: LG UJ6300 (43UJ6300). Middle: LG UJ7700 (49UJ7700). Top right: Samsung MU7000 (UN55MU7000). Bottom right: Vizio M Series 2017 (M65-E0).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The UJ7700 is a good TV, but it's in the most popular price bracket of the market, so it has a lot of competition that often offers better value.

Samsung MU7000
40" 49" 55" 65"

The Samsung MU7000 and LG UJ7700 offer very similar overall performance. The UJ7700 uses an IPS panel which is better suited for a bright room with side seating or if you like to move around with the TV on. The MU7000 has a VA panel which is better suited for a dark room, but has worse viewing angles so they image is best viewed from directly in front. The UJ7700 uses a different sub-pixel structure which may bother some people in certain viewing situations.

LG UJ6300
43" 49" 55" 65"

The LG UJ7700 is better than the LG UJ6300. Unfortunately, the UJ6300 has issues with temporary image retention and static images can remain visible on the screen for a few minutes after they have been removed. The UJ7700 does not have this issue. The UJ7700 also has an extra HDMI port compared to the UJ6300. The UJ7700 uses a different sub-pixel structure which may bother some people in certain viewing situations.

Samsung MU8000
49" 55" 65" 75" 82"

The Samsung MU8000 is better than the LG UJ7700, unless you have a wide seating area. The MU8000 uses a VA panel, which has better native contrast and black uniformity for dark room viewing, and it is brighter with most content. The MU8000 also has a faster response time. The UJ7700 uses an IPS panel which is better suited for a wide seating area in a bright room. The UJ7700 uses a different sub-pixel structure which may bother some people in certain viewing situations.

Samsung MU6100
58"

The Samsung MU6100 and LG UJ7700 are very similar, but due to the difference in panel types, one may be better than the other depending on your needs. The UJ7700 uses an IPS panel which is better suited for a brighter room with a wide viewing angle. The MU6100 uses a VA panel which has better contrast and black uniformity, making it better suited for a dark room. The UJ7700 uses a different sub-pixel structure which may bother some people in certain viewing situations.

Sony X800E
43" 49" 55"

The X800E is a very comparable 4k LED TV from Sony. They are both IPS LCD TVs with similar performance. The X800E is a fair bit brighter with standard content such as broadcast TV, but the UJ7700 is brighter in HDR. The LG also has lower input lag. They are very comparable TVs overall, so pick whichever is cheaper.

LG UH7700
55" 60" 65"

The LG UH7700 is the 2016 UHD TV that the UJ7700 replaces. Unlike the new model, it does not feature an RGBW pixel structure, but the overall performance is quite similar. If the lower light output of the UH7700 isn't an issue, then it's worth picking over the UJ7700 if it is found for cheaper.

Vizio M Series 2016
50" 55" 60" 65" 70" 80"

The Vizio M Series 2016 is a commonly recommended mid-range TV from 2016. It features a powerful local dimming feature that greatly enhances the depth of blacks and contrasts. If placed in a darker environment, the Vizio M will offer much better picture quality than the LG UJ7700. It's a bit more limited with HDR, but most people will prefer the Vizio.

+ Show more

Conclusion
SEE PRICE
Amazon.com

7.3Mixed Usage
What it is General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
Good TV for a mixed usage. The LG UJ7700 has a wider viewing angle than average and decent picture quality. A combination of low motion blur, low input lag and excellent smart features makes it quite versatile.
6.0Movies
What it is Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
Average choice for movies in a dark room. The UJ7700's blacks are not very deep or uniform. The local dimming feature is also better kept disabled since it can often be quite distracting.
7.7TV Shows
What it is TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
Decent TV for watching TV shows. The viewing angle is a bit wider than average, and the WebOS smart platform is excellent. Unfortunately, though, it's not the brightest in SDR, which can cause issues in well-lit environments.
7.4Sports
What it is Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
Good TV for watching sports. The LG UJ7700's picture is quite uniform and has little motion blur, but there is some dirty screen effect. It also has wider than average viewing angles, making it good for game days with a lot of company.
7.9Video Games
What it is Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
Great TV for playing video games. Input lag is incredibly low, and, motion is suitably good as well, making the whole experience quite responsive.
6.1HDR Movies
What it is HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
Good TV for HDR movies. Gets brighter than most other IPS LED TVs, and features Dolby Vision, which some users might appreciate. It can also display a wider range of colors without gradations, which is important for HDR.
7.5HDR Gaming
What it is HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
The UJ7700's input lag does not deteriorate with an HDR input, which is great. The TV's already very good gaming capabilities translate well with HDR content.
8.0PC Monitor
What it is PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
Average PC monitor. Necessary resolutions are present, and the wider viewing angle helps keep the entire screen uniform when sitting close. It isn't the brightest though, and the RGBW pixel structure can cause some issues with straight vertical lines.

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