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Reviewed on May 31, 2018 , Eric Bousquet, Ian Cumming, Dimitris Katsaounis, Adam Babcock, Yannick Khong

LG SK8000
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
7.6
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:
Recommended if under (USD)
What it is: Maximum price to be a better value than its competitors.
How to use it: This product is the best choice in its range if you can find it below this price.
Automatically calculated every hour based on the scores and prices of all other products we've tested.
: $530
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.
: Vizio P Series 2018
6.4
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:
8.0
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:
7.9
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.
8.4
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.
6.4
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.
7.7
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.
8.3
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:
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 SK8000 is a good TV for mixed usage, with only decent picture quality but very good motion handling. When viewed in the dark, the low contrast ratio results in blacks that appear gray and the local dimming is ineffective at improving dark scene performance. In a bright room though, this isn't noticeable and the image also remains accurate when viewed at an angle which is good for those with wide seating. Motion handling is also very good and the TV has excellent low input lag which is great for gamers.

Test Results
Design 9.5
Picture Quality 7.1
Motion 8.0
Inputs 9.4
Sound Quality 6.0
Smart Features 8.2
Pros
  • Excellent low input lag
  • Very fast response time
  • Great reflection handling
Cons
  • Blacks appear gray and blotchy in a dark room
  • Peak brightness is only decent
Update 6/12/2018: The 49" SK8000 has a 60Hz panel, and some results will be different

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49" 49SK8000PUA
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55" 55SK8000PUA
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65" 65SK8000PUA
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9.5

Design

Score components: Subjectively assigned
LG SK8000 Design Picture
Curved : No

The design of the LG 55SK8000PUA / LG 65SK8000PUA is excellent. It resembles a lot the SK9000 and esteems a slight premium feel. Although the TV is thin and looks good, when wall mounted, you might find it difficult to reach some of the inputs that are facing outwards. There is some basic cable management down the rear of the stand, but when the TV is wall mounted, there is practically no cable management. The build quality is good.

Stand
LG SK8000 Stand Picture

The LG 55SK8000PUA stand is curved and made of metal. It's almost identical to the SK9000 and provides a good and sturdy support to the TV. This won't prevent the TV from wobbling a little if knocked on the side.

The footprint of the 55" TV stand: 32.6" x 9.8"

Back
LG SK8000 Back Picture
Wall Mount : Vesa 300x300

The back of the TV is very thin metal and quite plain. Cable management is done through a single hook just like the LG SK9000. However, in this TV, many of the inputs are pointing outwards and are difficult to access when placed close to a wall.

Borders
LG SK8000 Borders Picture
Borders : 0.47" (1.2 cm)

The borders are thin and look good. They are similar in width to the SJ8500, and are made of metal and feel high quality.

Thickness
LG SK8000 Thickness Picture
Max Thickness : 2.64" (6.7 cm)

The LG SK8000 is very thin at the top but slightly wider at the bottom where the LEDs are located.

Temperature
LG SK8000 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
:
104 °F (40 °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 gets slightly warm at the bottom edge of where the LEDs are encased. This should not cause any trouble though.

7.5 Build Quality
LG SK8000 Build quality picture

The build quality of the LG SK8000PUA is good. There are no gaps and everything seems to fall well into place. The metal back is very thin and shows bumps and nicks very easily.

7.1

Picture Quality

The LG SK8000 has a decent picture quality. With a mediocre contrast ratio, blacks will show grayish in dark rooms and the TVs local dimming capability is unable to help due to its vertical local dimming zones. We recommend keeping it  'Off'. It is not as bright as the SK9000, and small highlights are easily missed. As with most IPS panels the viewing angle is mediocre. Although it is better than most VA panel TVs like the X900F, it still falls behind OLED  TVs. The reflection handling is great, making it a good choice for wide viewing environments, but there is some noticeable dirty screen effect which will not please sports fans.

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 SK8000 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
:
1098 : 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
:
1100 : 1

The native contrast of the LG SK8000 is mediocre and towards the lower end of IPS panel contrasts we tested in the last two years.

If watched in a dark room, blacks will look grayish, but in bright environments, this will not be so obvious.

When local dimming is on there is not much improvement in contrast and this is due to poor local dimming performance.

1.5 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

Local dimming performance is poor. This is due to the way local dimming is performed on this TV. The zones are vertical and thus it can not work effectively with images that interchange bright dark areas vertically.

We recommend that you leave the local dimming setting to medium and if you find that the screen brightness changes are bothering you, then you should turn it to off.

6.8 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
:
260 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
:
93 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
:
191 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
:
287 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
:
325 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
:
324 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
:
93 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
:
191 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
:
285 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
:
323 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
:
322 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
:
0.083

The SDR peak brightness is okay. The LG SK8000 like other IPS panels might appear dim in bright rooms. The brightness rises slightly as the bright area increases but is low in very dark scenes.

The real scene brightness is measured near the edge of the screen, which isn't as bright as the center.

6.1 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
:
271 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
:
523 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
:
523 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
:
412 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
:
333 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
:
332 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
:
233 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
:
277 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
:
330 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
:
331 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
:
331 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
:
0.024

HDR peak brightness is mediocre and falls short from the target of 1000 cd/m² throughout the whole range of window sizes. Again the real scene is dimmer than the 100% window mostly due to the edge of the screen being dimmer than the center.

7.1 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
LG SK8000 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%
:
4.481 %
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%
:
0.196 %
LG SK8000 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%
:
0.542 %
5% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.107 %

The gray uniformity of the LG SK8000PUA is decent. In the 50% gray image, some clouding and uniformity issues are visible even to the untrained eye. And some dirty screen effect is expected when watching sports.

Things are better in the 5% gray image where the image is much more uniform except some hardly noticeable clouding at the center.

6.2 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 SK8000 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 SK8000 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°
:
30 °
LG SK8000 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 °

The LG SK8000 has an almost identical performance to SK9000 with regards to the viewing angle. It is not bad since it performs better than most VA panels, but falls short of OLEDs. Colors and brightness shift as the angle increases so it is not the best choice for viewing at an angles.

3.8 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
LG SK8000 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.
:
2.851 %
LG SK8000 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.
:
5.223 %

Black uniformity is poor with clouding being apparent all over the screen. The situation remains similarly bad when local dimming is 'on'. This is again due to the local dimming zones. There are only vertical local dimming zones and thus they fail to dim the areas above and below the test cross.

8.8 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components:
LG SK8000 Reflections Picture LG SK8000 Average Room Off Picture LG SK8000 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 %
:
2.8 %
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 %
:
0.5 %

The reflection handling is excellent and almost identical to the SK9000. The semi-gloss finish diffuses reflections, reducing their overall intensity resulting in a comfortable viewing experience in most rooms.

8.7 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 SK8000 Pre Calibration Picture LG SK8000 Pre Gamma Curve Picture LG SK8000 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
:
2.07
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.69
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
:
2.18
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
:
6459 K

Remarkable pre-calibration out of the box, the best results were obtained with the 'Expert (Dark Room)' picture mode. Color and White Balance dE were good, and the color temperature was almost spot on 6500K. The color and white balance delta is low enough that most people won't notice.

9.5 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 SK8000 Post Calibration Picture LG SK8000 Post Gamma Curve Picture LG SK8000 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
:
0.10
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.37
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
:
6509 K

After calibration, the LG SK8000 is almost perfect as it achieves excellent white balance, excellent color temperature small color dE and a gamma almost 2.2. It's only at very low brightness that the TV can not follow the PQ line, but this will not be noticed by many people.

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 SK8000 480p Picture

There were no obvious issues upscaling older 480p content like DVDs on the LG 55SK8000PUA / LG 65SK8000PUA.

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 SK8000 720p Picture

720p content is scaled well with no obvious over softening or artifacts on the SK9000.

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 SK8000 1080p Picture

1080p content such as Blu-rays are upscaled well. Details look good and the image is sharp.

10 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 SK8000 4k Picture

Native 4k content is clear and sharp.

7.5 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.
:
No
LG SK8000 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%
:
83.88 %
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%
:
88.83 %
LG SK8000 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%
:
61.06 %
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%
:
66.45 %
LG SK8000 EOTF

The TV has a good color coverage. Its coverage of the DCI P3 color space is similar to last years SJ8500 both when measured at the CIE 1931 xy space and at the CIE 1976 u' v'.

Its coverage of the Rec 2020 color space falls just short of our threshold of 67% to call it a wide color gamut support. It is able to produce more saturated colors than SDR TVs, but it isn't as wide as many other HDR TVs.

The TV's EOTF follows the HDR PQ well up to the 60% input signal. At higher levels of input signal some compression is present but this should not be a problem for most people.

This EOTF was measured in the Cinema picture mode, the EOTFs for Game mode and PC mode are here and here and are almost identical so similar results should be expected.

6.0 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 SK8000 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%
:
66.4 %
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.
:
30.3 %
LG SK8000 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 %
:
54.5 %
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.
:
25.7 %

Sub-par color volume and a little worse than last year's SJ8500. The TV can not accurately display very dark colors, and its black level is negatively affected because of its IPS panel.

8.6 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 SK8000 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
:
0.098 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
:
0.114 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
:
0.076 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
:
0.082 dE

The TV shows gradients smoothly in most content, but in certain content like our gradient test photo the gradient is not smooth at all, producing very visible banding in many places. Our gradient test results used in the score are measured by showing one color slide at a time, and in this case the TV has great gradient performance; we also played a scene from the HDR movie The Martian that has gradients in its skies, and the TV showed these smoothly as well. In light of this it seems that the TV can show smooth gradients in most content, but there are rare cases where gradients aren't shown well at all; in these cases setting the TV's MPEG Noise Reduction feature to Low in HDR can help to smooth out gradients, at the cost of losing some small detail in scenes.

7.4 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 SK8000 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%
:
0.85 %
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 LG 55SK8000 / LG 65SK8000 do have some image retention issues. After the 10 minutes burn-in scene, as we can see on our test picture, the image retention is easily noticeable. This isn't an issue for most content though, and the good news is that after 2 minutes of recovery the retention is gone.

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

While IPS panels can have some temporary image retention, there doesn't appear to be any risk of permanent burn-in as seen in our long-term test.

Pixels
8.0

Motion

The LG SK8000PUA has great motion handling. It has an excellent response time, better than the LG SK9000, and there is very little motion blur. The backlight uses PWM to dim, and there is visible flicker due to the relatively low flicker frequency (120 Hz). There is an optional black frame insertion feature which can help reduce stutter and it can reduce the flicker as low as 60 fps. The TV can interpolate lower refresh rate content up to 120 fps. It does not support VRR or AMD's Freesync 2.

9.0 Response Time
What it is: Amount of blur in fast motion.
When it matters: Sports, video games.
Score components:
LG SK8000 Motion Blur Picture LG SK8000 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
:
4.0 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
:
13.0 ms

Excellent response time on the LG SK8000. There is some overshoot but it is minor and will cause only some small inverted trails following fast moving objects.

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 SK8000 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 LG SK8000 uses PWM to dim the backlight at all brightness levels. The PWM frequency is a relatively low 120 Hz, and people sensitive to flicker might notice it more than other TVs like the TCL R617 which uses a higher flicker frequency.

9.3 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.
LG SK8000 BFI Picture LG SK8000 BFI Frequency Picture
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
:
Yes
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
:
60 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
:
Yes
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
:
Yes
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
:
60 Hz

The LG SK8000 has an optional BFI mode which reduces the flicker frequency to 60 Hz. With 120 fps content the flicker frequency can be reduced by reducing the backlight intensity. For 60 fps content, set 'TruMotion' to 'User', and 'Motion Pro' to 'On'

10 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 SK8000 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
LG SK8000 Motion Interpolation (60 fps) Picture
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.
:
Yes

The LG 55SK8000PUA / LG 65SK8000PUA can interpolate lower frame rate content up to 120 Hz. In scenes with fast motion there are artifacts, and if the motion gets too intense, the TV stops interpolating.

To enable motion interpolation (also called the Soap Opera Effect) set 'TruMotion' to 'User'. For a 30fps source increase the 'De-Judder' slider, and for a 60fps source increase the 'De-Blur' slider.

Update 06/12/2018: The 49" SK8000 has a 60Hz panel, and will only be able to interpolate up to 60 Hz.

7.3 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
:
28.7 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
:
3.7 ms

The fast response time of the LG SK8000PUA means 24p content is held static on screen for long enough that motion can appear to stutter. This is especially noticeable with wide panning landscape shots.

If this bothers you, motion interpolation can be enabled to increase the frame rate of the content, although this introduces the Soap Opera Effect that some people don't like.

10 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.
:
Yes
Judder-Free 24p via 60i
What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
Yes
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 TV is judder free when playing native 24p content from a Blu-ray player and from other sources (cable/satellite boxes and native streaming apps). To remove judder, the real cinema option must be enabled in the Picture Option Settings menu.

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
:
120 Hz (except 49")
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

The LG SK8000 does not support any of the Variable Refresh Rate technologies like AMD's Freesync. This is expected as LG has not announced any plans to support these.

9.4

Inputs

Score components:

The LG SK8000 LED TV has excellent low input lag. Even outside of game mode, the input lag is low enough for most gamers. Input lag is slightly higher when chroma 4:2:0 is used in HDR, this shouldn't be an issue. Most of the common resolutions are supported. It does not support 1440p.

9.5 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
:
14.2 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
:
14.2 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
:
34.7 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
:
14.0 ms
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
:
14.2 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
:
22.5 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
:
14.3 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
:
N/A
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
:
43.1 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
:
84.7 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

The LG SK8000 has excellent low input lag, slightly better than the LG SK9000 and the TCL R617. Gamers and people who plan on using it as a monitor will find the TV very responsive.

When Chroma 4:2:0 is used in HDR there is an extra 120 Hz frame (8.3 ms) of input lag. The reason for this is unknown but the input lag results are similar to other 2018 LG TVs including the C8 and SK9000.

  • 4k @ 60Hz @ 4:2:0 + 10 bit HDR: 22.5 ms
  • 4k @ 60Hz @ 4:2:0 + 8 bit HDR: 22.5 ms
  • 4k @ 60Hz @ 4:2:2 + 8 bit HDR: 14.1 ms
  • 4k @ 60Hz @ 4:4:4 + 8 bit HDR: 14.4 ms

In PC mode, the input lag is extremely low regardless of picture mode and the SK8000 is very responsive. Outside of Game or PC mode the input lag is a bit higher, but still good enough for most gamers.

8.3 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
  • 17% 4k @ 60Hz
  • 17% 4k @ 60Hz @ 4:4:4
1080p @ 60Hz @ 4:4:4
What it is: Crisp text on 1060p @ 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.
:
Yes (native support)
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

The LG SK8000 supports most of the common resolutions without issue. 4k @ 60 Hz @ 4:4:4 or 4:2:2 is only supported when HDMI ULTRA HD Deep Color is enabled for the input used, like most TVs.

Update 06/12/2018: The 49" SK8000 has a 60 Hz panel, and does not support 120 Hz input.

Side Inputs
LG SK8000 Side Inputs Picture

Similar inputs to the LG SK9000 but more of the outputs are out the back of the TV. Like the SK9000 there is no analog audio output so an external adapter is required to connect wireless headphones like this one.

Rear Inputs
LG SK8000 Rear Inputs Picture

Most of the outputs are out the back of the TV. There is a single connection for a composite input using the included breakout adapter, but there is no component input.

Total Inputs
HDMI : 4
USB : 3
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 0
Composite In : 1 (incl. adapter)
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)
6.0

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 LG SK8000 is has a mediocre sound. This TV doesn't get loud and doesn't have an extended bass, so it doesn't produce any thump or rumble. But its bass does have a decent amount of punch and produces clear dialogs. For a better sound, dedicated speakers or a soundbar is recommended.

5.9 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 SK8000 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
:
84.76 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
:
3.91 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
:
4.70 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
:
6.81 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
:
84.0 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
:
4.79 dB

The frequency response of the LG SK8000PUA is sub-par. Low-frequency extension (LFE) is at 85Hz, which is above-average. This means that the bass of this TV won't produce any thump or rumble, but will have a decent amount of punch. The frequency response above the LFE point is decent and relatively well-balanced so it produces clear dialogs, but there will be some pumping and compression present at louder volumes, even though this TV doesn't get loud. Also, although this TV comes with a room correction system, it wasn't able to remove the modes of our test room around 200Hz.

6.4 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 SK8000 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
:
0.565
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
:
1.04
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
:
3.13 %
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
:
7.93 %

The distortion performance is about average. The overall amount of produced THD is a bit elevated, but it doesn't increase significantly under maximum volume. However, this TV doesn't get loud.

8.2

Smart Features

Score components:
  • 42% Interface
  • 2% Ad-Free
  • 37% Apps and Features
  • 16% Remote
  • 3% Remote App
LG SK8000 Smart TV Picture
Smart OS : WebOS
Version : 4.0

The LG SK8000 runs the latest version of LG's webOS smart interface. It has a decent selection of built-in apps covering most of the common uses. The built-in movie, music, and photo viewers play most of the popular formats and are easy to use. The LG Content Store is easy to navigate and has thousands of available apps, but there are ads and suggested content throughout and they can't be disabled.

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.
:
10 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

The interface is very similar to the webOS 3.5 found on last year's LG TVs like the SJ8500. The menu is fast and easy to navigate, although the slower processor makes it a bit slower than the high-end LG TVs like the C8.

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 SK8000 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

There are ads displayed on the home menu and in the LG content store. A lot of it is suggested content, but there is no opt-out and no way to disable them.

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 SK8000 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 LG 55SK8000PUA / LG 65SK8000PUA have many of the most popular apps preinstalled. Many thousands more apps are available in 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 SK8000 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
:
Many Features
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 remote is identical to the one found on all high-end LG TVs like the C8 and SK9000. It provides quick access to the most common functions of the TV. It can also be used as a pointer which is the fastest way to navigate the menus.

The remote also works for voice commands, and the SK8000 understands basic commands such as changing inputs, opening YouTube, searching Netflix, etc... It can also be used for more advanced searches, looking up weather or answering basic searches. Some searches are answered by LG's proprietary ThinQ AI; others were answered by Google Assistant, similar to Sony TVs like the X900F.

7.0 Remote App
What it is: The features of the official phone and tablet app for the TV.
Score components: Subjectively assigned
LG SK8000 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.
:
Limited Support

The LG TV Plus app offers quick access to most TV features and controls. It can be used to launch apps, change inputs, and to stream files from the mobile app.

It can also be used to perform a voice search, but does not understand the same commands as the remote.

TV Controls
LG SK8000 Controls Picture

There is a single button underneath the TV's main bezel. When pressed, a menu is displayed on screen that can change inputs or power off the TV.

In The Box
LG SK8000 In The Box Picture

  • Composite Breakout Adapter
  • Strap for Cable Management
  • Remote
  • Batteries
  • Manual
Not Shown:
  • 61.5" Power Cable

Misc
Power Consumption : 56 W
Power Consumption (Max) : 120 W
Firmware : 03.00.62

Differences between Sizes and Variants

We tested the 55" SK8000 (55SK8000PUA). For the most part, we expect our review to be valid for the 49" (49SK8000PUA), and 65" (65SK8000PUA) as well. The 49" model has a 60 Hz panel, so some tests won't perform as well but for the most part, we expect our review to be valid. The 75" model is listed under a separate model code in the U.S. It has a 20W subwoofer so the sound will not perform the same. We generally expect it to perform similar to the 55" we have tested, but larger TVs are more prone to uniformity issues so it might be different.

If someone comes across a different type of panel or their LG SK8000 doesn't correspond to our review, let us know and we will update the review.

Size US Model Warehouse Model EU Model Refresh Rate
49" 49SK8000PUA 49SK8000AUB 49SK8100PLA 60 Hz
55" 55SK8000PUA 55SK8000AUB 55SK8100PLA 120 Hz
65" 65SK8000PUA 65SK8000AUB 65SK8100PLA 120 Hz
75" 75SK8070PUA 75SK8070AUB 75SK8100PLA 120 Hz

The warehouse model SK8000AUB is nearly identical to the one we reviewed but has a different stand and the frame and stand are dark gray.

Compared to other TVs

LG SK8000 Group Shot Picture
Top left: Sony X850F(XBR65X850F). Bottom left: TCL R617 (55R617). Middle: LG SK8000 (55SK8000PUA). Top right: LG SJ9500 (65SJ9500). Bottom right: Samsung NU8000 (UN55NU8000). Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The LG SK8000 is a decent TV for mixed usage but it has some serious flaws. There are better TVs out there for most uses in the same price range.

LG SK9000
55" 65"

The LG SK9000 is a better TV than the LG SK8000 if you can afford it. The SK9000 has better picture quality thanks to better local dimming, much higher peak brightness, and a wider color gamut. The SK8000 and SK9000 have similar motion handling and great low input lag. Both TVs are better suited for a brighter room, but the LG SK8000 doesn't get bright enough to overcome glare in a bright room.

Sony X850F
65" 75" 85"

The Sony X850F is slightly better than the LG SK8000 for mixed usage. Neither the X850F or SK8000 perform very well in a dark room due to sub-par contrast and black uniformity, but the Sony is better for bright room performance as the LG doesn't get bright enough to overcome glare in a bright room. The X850F supports a wide color gamut and offers better HDR performance, but doesn't have as low input lag for gamers.

Samsung NU8000
49" 55" 65" 75" 82"

The Samsung NU8000 is a better TV than the LG SK8000 for those who view from directly in front or in a dark room. The NU8000 has better picture quality and has better dark room performance thanks to the much better black uniformity and much higher native contrast ratio, but it has worse viewing angles than the LG SK8000 so it might be worse for those with wide seating. The Samsung NU8000 supports a wide color gamut and has much better color volume.

TCL R617
55" 65"

The TCL 6 Series (R615/R617) is a better TV than the LG SK8000 for most people. The design of the TCL R617 isn't as nice as the SK8000 but has much better picture quality and is better suited for bright room performance. HDR performance of the R617 is much better, and it supports a wide color gamut and it has much better color volume. The picture quality of the TCL 6 Series also degrades rapidly when viewed at an angle. Both the TCL R617 and LG SK8000 perform well for gaming and for use as a PC monitor, although the subpixel structure of the R617 might bother some people.

Conclusion
SEE PRICE
Amazon.com

7.6Mixed 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:
The LG SK8000 is a good TV for mixed usage. It is best suited to viewing in a room with a decent amount of ambient light. Dark room performance is poor and it doesn't get bright enough to overcome glare. HDR doesn't add much when watching movies or gaming. It has excellent input lag and a fast response time, so fast action looks great whether it be in a hockey game or the latest action movie.
6.4Movies
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:
Decent performance for watching movies in a dark room, but the TV is limited by the poor native contrast ratio and weak local dimming. It is best suited for watching movies in a dimly lit room, as blacks will never appear truly black.
8.0TV 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:
Good performance for watching TV Shows in a bright room. It has great reflection handling and a decent wide viewing angle, so it is best suited for a room with a medium amount of ambient light as it doesn't get bright enough to overcome glare.
7.9Sports
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 in a living room. It has great reflection handling and a decent wide viewing angle great for game day parties, but it doesn't get bright enough to overcome glare in a bright room. It has an excellent response time and fast moving motion doesn't have much motion trail.
8.4Video 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 video game performance. It has excellent low input lag even outside of game mode. The response time is excellent, and the screen reacts quickly to fast motion.
6.4HDR 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.
Decent TV for HDR Movies. The native contrast ratio is decent, but the local dimming feature is ineffective at improving dark room performance and the black uniformity is poor. HDR peak brightness is decent, but the SK8000 doesn't support a wide color gamut.
7.7HDR 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.
Good TV for HDR Gaming, although HDR doesn't add much. Like with SDR gaming, the input lag and response time is excellent. The contrast and black uniformity are poor, so late night gaming in a dark room isn't as enjoyable. It doesn't support a wide color gamut and the local dimming feature is ineffective.
8.3PC 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 is a good TV for use as a PC monitor. Chroma 4:4:4 is properly supported so text looks clear and sharp. It has a very fast pixel response time and excellent low input lag, so it feels responsive. It has a decent viewing angle, so even if you are sitting close, the edges don't wash out.

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