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    Table of Contents
  1. Intro
  2. Design
    1. Stand
    2. Back
    3. Borders
    4. Thickness
    5. Temperature
    6. Build Quality
  3. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Gray Uniformity
    6. Viewing Angle
    7. Black Uniformity
    8. Gradient
    9. Pre Calibration
    10. Post Calibration
    11. 480p Input
    12. 720p Input
    13. 1080p Input
    14. 4k Input
    15. Color Gamut
    16. Color Volume
    17. Image Retention
    18. Reflections
    19. 3D
    20. Pixels
  4. Motion
    1. Motion Blur
    2. Image Flicker
    3. 24p Playback
    4. Motion Interpolation
  5. Inputs
    1. Input Lag
    2. Supported Resolutions
    3. Side Inputs
    4. Rear Inputs
    5. Total Inputs
    6. Inputs Specifications
  6. Sound Quality
    1. Frequency Response
    2. Distortion
  7. Smart Features
    1. Interface
    2. Ads
    3. Apps and Features
    4. Remote
    5. Remote App
    6. TV Controls
    7. In The Box
    8. Misc
  8. Sizes and Variants
  9. Compared
  10. Conclusion
  11. Q&A
Reviewed on Jun 20, 2017 , Ian Cumming, Mehdi Azzabi, Martin Leduc, Eric Bousquet

LG SJ8500
TV REVIEW

Usage Ratings
Version 1.1
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Test Benches:

  • 1.1: Summer 2017
  • 1.0: Winter 2015
  • 0.9: Winter 2014
  • 0.8: Winter 2013
Recommended if under (USD)
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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.
Value for price
beaten by
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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.
Mixed Usage
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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:
7.3 $630 Vizio
M Series 2017
Movies
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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:
6.6 $410 Vizio
M Series 2017
TV Shows
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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:
7.6 $710 Sony
X720E
Sports
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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.
Score components:
7.2 $680 Sony
X720E
Video Games
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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.
7.9 $410 TCL
P607
HDR Movies
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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.
6.8 $490 Vizio
M Series 2017
HDR Gaming
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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.
7.6 $440 TCL
P607
PC Monitor
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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.
7.8 $680 Sony
X720E
Type : LED
Resolution : 4k
Refresh Rate : 120 Hz

The LG SJ8500 LED 4k TV is a good smart TV with decent picture quality and better than average viewing angles. It gets decently bright in HDR, and it can display a wide gamut of colors without gradations. Its input lag and motion blur are both notably low, making it a good choice for gamers. Unfortunately though, its blacks aren't very deep and its uniformity of both greys and blacks is quite poor overall.

Test Results
Design 9.5
Picture Quality 6.9
Motion 8.3
Inputs 9.7
Sound Quality 7.3
Smart Features 8.2
Pros
  • Wide viewing angle
  • Very responsive for gaming
  • Can reproduce a wide range of colors
Cons
  • Blacks are blotchy and lack contrast
Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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9.5

Design

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Score components: Subjectively assigned
LG SJ8500 Design Picture
Curved : No

The design of the SJ8500 is very similar to the UH8500 from 2016. It has the familiar arc stand which looks great, and sleek borders. It is quite thin when viewed from the side and will certainly stand out in any room. Unfortunately there are some practical limitations as the inputs may be difficult to access if placed close to a wall and the cable management is sub-par.

Stand
LG SJ8500 Stand Picture

The stand is very similar to the UH8500 and UH9500 from 2016, with the addition of 'Super UHD' branding. It supports the TV quite well, but does wobble if knocked.

Footprint of the 55" TV stand: 9.8" x 33.0"

Back
LG SJ8500 Back Picture
Wall Mount : Vesa 300x200

The rear of the TV is also very similar to the 2016 UH8500. The cable management is notably worse though, as the cable guide has been replaced by a single hook. The inputs have also been rearranged slightly which unfortunately means that many of the inputs are difficult to access if placed close to a wall.

Borders
LG SJ8500 Borders Picture
Borders : 0.39" (1.0 cm)

The borders are thin and look good, at about two thirds of the thickness of the UH8500 from last year.

Thickness
LG SJ8500 Thickness Picture
Max Thickness : 2.56" (6.5 cm)

The TV has an average thickness, although it appears thin because these protrusions are near the base of the TV.

Temperature
LG SJ8500 Temperature picture
Maximum Temperature
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What it is: The peak temperature found on the TV.
Good value: <35°C
Noticeable difference: <5°C
:
36 °C
Average Temperature
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What it is: The Average temperature measured on the TV
When it matters: If the TV is placed in an enclosed space.
Good value: 30
Noticeable difference: 5
:
31 °C

The TV runs fairly cool, only getting a little warm to the touch in a few places on the back and on the bottom edge, where the edge lit LEDs are. Fortunately the bottom edge is where most of the vents are.

7.0 Build Quality
LG SJ8500 Build quality picture

The build quality of the SJ8500 is decent. The rear of the TV is all plastic, but doesn't have too much flex.

6.9

Picture Quality

The LG SJ8500 LED TV has a better than average picture quality. When set in a dark room, the unremarkable contrast ratio and the disappointing black uniformity mean the SJ8500 render black scene very poorly and blacks end up looking more grayish than really black. The SJ8500 does not really fair better in a bright room since the SDR peak brightness is not really high enough to fight glare from a bright light or window and it could be better at dealing with reflection. The gray uniformity is decent and the dirty screen effect is minimal, which is good especially if you intend to watch a lot of sports. The viewing angle is not bad so the SJ8500 could be a good TV to watch a big sports event with a large group of people since even the people sitting off center could have a similar picture quality as those right in front. Finally, when it come to HDR, the SJ8500 can reproduce a wide range of color since it has a wide color gamut and with its decent HDR peak brightness, it can reproduce relatively bright highlights. But since the local dimming is poor, it cannot really get brighter and limit the blooming at the same time.

6.6 Contrast
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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 SJ8500 Checkerboard Picture
Native Contrast
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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
:
1379 : 1
Contrast with local dimming
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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
:
1423 : 1

The native contrast ratio of the SJ8500 could be better. For an IPS TV, this is in the higher ranking, but it is nowhere near what most of VA TVs usually have. With this low native contrast ratio, when set in a dark room, this means that blacks won't be very deep and will look more grayish than really black. As a result of this, dark room performance really takes a hit and dark scene end up looking washed-out rather than really dark.

If set in a bright room, the effect of a low native contrast ratio will be less noticeable and this is some of the reason that IPS TVs are more recommended for room with a lot of light.

When the local dimming is turned on and set to maximum, the contrast ratio goes up a little bit but is still far from what you would get from a good VA TV.

1.5 Local Dimming
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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
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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
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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 feature of the SJ8500 is bad and is not better than on most other edge-lit TVs. When compared to the 2016 LG UH8500, the local dimming does behave very similarly, without much appreciation over the last iteration. Looking at our contrast ratio test, we see that it can't really make the contrast that much better.

Most of the time, you should turn on the local dimming to high, since it can help a bit make black a bit deeper, but if you notice the luminosity screen changing too much by itself, you can set the local dimming to medium or low. In the case that you really find it annoying, simply set the local dimming off.

6.6 SDR Peak Brightness
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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
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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 regular 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 SDR signal. Scene: here.
When it matters: When watching movies or watching TV show in SDR.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
215 cd/m2
SDR Peak 2% Window
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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; especially for SDR content.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
246 cd/m2
SDR Peak 10% Window
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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; especially for SDR content.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
275 cd/m2
SDR Peak 25% Window
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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: Bright rooms; bright objects in SDR video.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
277 cd/m2
SDR Peak 50% Window
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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: Bright rooms.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
277 cd/m2
SDR Peak 100% Window
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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: Bright rooms
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
278 cd/m2
SDR Sustained 2% Window
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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 throughout a scene; especially for SDR content.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
245 cd/m2
SDR Sustained 10% Window
Show Help
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 throughout a scene; especially for HDR content.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
274 cd/m2
SDR Sustained 25% Window
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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: Bright rooms; bright objects in SDR video.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
276 cd/m2
SDR Sustained 50% Window
Show Help
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: Bright rooms.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
276 cd/m2
SDR Sustained 100% Window
Show Help
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: Bright rooms.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
276 cd/m2
SDR ABL
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What it is: The standard deviation 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
:
0.008

Okay SDR peak brightness, fine for a dim room but in a well lit room the TV may appear too dim. The brightness stays fairly consistent, only dimming a bit during very dark scenes like our 2% white window test. The real scene brightness is measured near the edge of the screen, which isn't as bright as the center. Overall the SJ8500 isn't as bright as the UH8500 from last year, though there's less dimming of dark scenes. A plot of brightness over time is shown here.

6.0 HDR Peak Brightness
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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
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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
:
243 cd/m2
HDR Peak 2% Window
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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
:
531 cd/m2
HDR Peak 10% Window
Show Help
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
:
609 cd/m2
HDR Peak 25% Window
Show Help
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
:
496 cd/m2
HDR Peak 50% Window
Show Help
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
:
364 cd/m2
HDR Peak 100% Window
Show Help
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
:
295 cd/m2
HDR Sustained 2% Window
Show Help
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
:
522 cd/m2
HDR Sustained 10% Window
Show Help
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
:
210 cd/m2
HDR Sustained 25% Window
Show Help
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
:
278 cd/m2
HDR Sustained 50% Window
Show Help
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
:
292 cd/m2
HDR Sustained 100% Window
Show Help
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
:
294 cd/m2
HDR ABL
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What it is: The standard deviation 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
:
0.051

Mediocre HDR peak brightness. The TV's local dimming brightens highlights in dark scenes fairly well, as shown in our smaller window tests. However the real scene brightness is quite low for HDR highlights, nowhere near as bright as many of its competitors or the UH8500 from last year. The brightness also cycles dramatically when shown a still image, as seen in this brightness plot, however this shouldn't be a problem when watching moving content.

6.7 Gray Uniformity
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What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
LG SJ8500 50% Uniformity Picture
50% Std. Dev.
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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%
:
5.59 %
50% DSE
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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%
:
0.202 %
LG SJ8500 5% Uniformity Picture
5% Std. Dev.
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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%
:
0.674 %
5% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.11 %

The overall gray uniformity of the SJ8500 is decent. Dirty screen effect is minimal and not too annoying while watching sports like football or soccer, which is good. The standard deviation is high and most of the uniformity issue come from the side of the TV being darker than the center. The bottom and top are a bit brighter, but it is not too much noticeable when compare to the darker sides.

When it come to the 5% gray uniformity test picture, nothing really come up beside some faint brighter spots where there was some major flashlighting on the black uniformity test picture. But it is not too much a problem on this test here, since the uniformity of the 5% gray is much better.

6.2 Viewing Angle
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What it is: Color accuracy when viewed from the side.
When it matters: Large living rooms with multiple viewing positions.
Score components:
LCD Type
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What it is: Type of LCD technology used by the TV.
When it matters: Different technologies have different viewing angle properties.
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.
:
IPS
LG SJ8500 Color Shift Picture
Color Shift
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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°
:
21 °
LG SJ8500 Brightness Picture
Brightness
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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°
:
27 °
LG SJ8500 Black Level Picture
Black Level
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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 any VA TV but not as good as OLED and some other IPS TVs. The black level remains virtually unchanged at an angle, but colors shift and brightness decreases when viewed from only a small angle. Still, this viewing angle makes the TV suited for a room where people often view the TV from the side.

3.6 Black Uniformity
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What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
LG SJ8500 Native Black Uniformity Picture
Native Std. Dev.
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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.
:
3.075 %
LG SJ8500 Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
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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.
:
5.078 %

The black uniformity of this LG TV is bad. Some flashlighting and clouding issues can be seen near each corner of the screen which affects greatly the uniformity of the screen when displaying a black image. Black uniformity issues are usually a bit more present on IPS TVs, but the SJ8500 is definitely worse than most of them.

With the local dimming feature turned on, most of the flashlighting issues that were visible in the corners are not visible anymore, but a large vertical blooming zone is now visible where the white cross is in the middle. This is mostly due because the local dimming zones span over a vertical zone that goes from the bottom to the top of the screen.

Note that once again here, we do not measure the black level, but the uniformity of the screen.

8.4 Gradient
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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.
Score components: Subjectively assigned
LG SJ8500 Gradient Picture
Color Depth
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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

The SJ8500 perform well in our gradient test and no banding that is normally seen on an 8-bit panel can be noticed here. Overall, this is a good result and is a bit better than what was seen on the 2016 UH8500. Some little imperfections can be seen in the dark blue and green, but besides that, it is a very smooth gradient.

6.4 Pre Calibration
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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 SJ8500 Pre Calibration Picture LG SJ8500 Pre Gamma Curve Picture LG SJ8500 Pre Color Picture
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
3.82
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
3.95
Gamma
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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
:
2.35

Out of the box, the accuracy is good, but not as good as the 2016 UH8500. The white balance is on the warm side and the dE is high enough so that TV enthusiasts could notice it. The gamma is a bit high too and the curve is not tracking our target too closely.

When it comes to the color, the color dE is a bit high too and enthusiasts could notice it. Most of the color are a bit off, with only the blue and cyan being a bit more off than the rest, but overall it is not that much a problem.

On a side note here, when we say that enthusiasts could notice it, we mean that a person that already calibrated or use a calibrated TV could notice some little imperfection. For most people, that are simply buying a new TV to replace an older TV, this level of imperfection is still very little and most of the new TV are usually far better than any older TV when it come to color accuracy.

9.4 Post Calibration
Show Help
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 SJ8500 Post Calibration Picture LG SJ8500 Post Gamma Curve Picture LG SJ8500 Post Color Picture
White Balance dE
Show Help
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.15
Color dE
Show Help
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.39
Gamma
Show Help
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
:
2.2

The calibration process of the LG SJ8500 was done without problem and the whole calibration session was done very fast, as with other LG TVs, thanks to the 2 and 20 points calibration. The white balance dE was brought down to a negligible 0.15, which is excellent. As the result of this correction, the gamma is now tracking our 2.2 target and the curve was also flatened.

The color space management provided by LG on the SJ8500 was very helpful to get the dE from 3.95 to 1.39, which is an excellent result. The white point, that was a bit off before calibration is now right spot on and most of the color are also tracking much more closely their targets.

You can see our recommended settings here.

8.0 480p Input
Show Help
What it is: Quality of a 480p input.
When it matters: Standard definition TV, DVDs.
Score components: Subjectively assigned
LG SJ8500 480p Picture

Upscaling of low quality content such as DVDs is good. Like other LG TVs, some halo artifacts can be seen along straight lines but this isn't too bad.

8.0 720p Input
Show Help
What it is: Quality of a 720p input.
When it matters: HD channels, some streaming videos.
Score components: Subjectively assigned
LG SJ8500 720p Picture

720p content such as cable is upscaled well. Details are preserved.

9.0 1080p Input
Show Help
What it is: Quality of a 1080p input.
When it matters: Blu-rays, streaming video, video files, video games.
Score components: Subjectively assigned
LG SJ8500 1080p Picture

Full HD content such as Blu-rays look good. The image remains detailed and clear.

10 4k Input
Show Help
What it is: Quality of a 4k UHD input.
When it matters: Streaming video, UHD Blu-rays, some PCs.
Score components: Subjectively assigned
LG SJ8500 4k Picture

No issues can be seen with native 4k content and the image is sharp.

7.8 Color Gamut
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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
Show Help
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 SJ8500 Color Gamut DCI-P3 Picture
DCI P3 xy
Show Help
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%
:
85.19 %
DCI P3 uv
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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%
:
93.93 %
LG SJ8500 Color Gamut Rec.2020 Picture
Rec 2020 xy
Show Help
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%
:
63.27 %
Rec 2020 uv
Show Help
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%
:
71.00 %
LG SJ8500 EOTF

Good wide color gamut, though not as wide as high end TVs. The TV falls a bit short at reproducing fully saturated red and blue, and quite short for saturated green. However, nearly all modern TVs struggle with greens. On the bright side the TV is fairly accurate at showing the colors it's able to, so most colors in HDR content will be shown accurately.

The TV's EOTF follows the HDR PQ curve remarkably well, except at the extreme low end, where it actually turned off the screen when shown 5% and 10% grey slides. It doesn't do this for colored 10% slides, as seen in the color volume test. This likely won't be an issue for normal content, as this is a very extreme case. This EOTF was measured in the 'Cinema' picture mode, the EOTFs for 'Game' mode and PC mode are here and here, and are also fairly accurate. The 5% and 10% grey slides were not turned off in PC mode.

6.9 Color Volume
Show Help
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 SJ8500 P3 Color Volume ITP Picture
Normalized DCI P3 Coverage ITP
Show Help
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%
:
78.9 %
10,000 cd/m² DCI P3 Coverage ITP
Show Help
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.
:
39.3 %
LG SJ8500 2020 Color Volume ITP Picture
Normalized Rec 2020 Coverage ITP
Show Help
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 %
:
60.0 %
10,000 cd/m² Rec 2020 Coverage ITP
Show Help
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.
:
29.6 %

Mediocre color volume. The TV's color gamut narrows significantly for very dark colors, and its black level is not very good because of its IPS panel. This color volume is similar to last year's UH8500, but a little worse for dark colors.

7.5 Image Retention
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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 SJ8500 Image Retention Picture
IR after 0 min recovery
Show Help
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%
:
0.43 %
IR after 2 min recovery
Show Help
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 %
IR after 4 min recovery
Show Help
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 %
IR after 6 min recovery
Show Help
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 %
IR after 8 min recovery
Show Help
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 %
IR after 10 min recovery
Show Help
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 %

The SJ8500 does present some image retention, but it is faint and goes away relatively fast. When compared to the 2016 UH8500, which have a very strong retention, where even the color of the logos of the burn-in scene could still be noticed, now on the SJ8500 you can only see a faint shadow of the logos. Also on the UH8500, the retention lasted for more than 4 minutes, as now on the SJ8500, it is gone before 2 minutes of recovery.

7.5 Reflections
Show Help
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
LG SJ8500 Reflections Picture LG SJ8500 Bright Room Picture
Reflection
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What it is: Ratio of ambient light reflected by the TV.
When it matters: Ambient light in the room.
Good value: < 1%
Noticeable difference: 0.5%
:
1.2 %
Screen Finish
Show Help
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

The SJ8500 is good at handling reflections. It has a semi-gloss finish which diffuses reflections a bit, reducing their intensity. This is a similar result to the UJ7700 and should be fine for most rooms, but very bright glare may present an issue.

0 3D
Show Help
What it is: Optional 3D video capability on TV.
When it matters: 3D movies and videos.
Score components: Subjectively assigned
3D
Show Help
What it is: If it can display a picture in 3D.
When it matters: 3D movies & videos.
:
No
3D Type
Show Help
What it is: The 3D technology used by the TV.
When it matters: 3D movies & videos.
Good value: Active have better resolution, but flickers. Passive is more comfortable, but loses half the vertical resolution.
:
No
2D to 3D
Show Help
What it is: Feature that converts 2D content to 3D.
When it matters: If you want to watch 2D content in 3D. Note that the quality is not as good as that of native 3D.
:
No

Unlike the 2016 UH8500, the LG SJ8500 does not support 3D.

Pixels
LG SJ8500 Pixels Picture

The chevron shape of the IPS pixels is visible when viewed from close up.

8.3

Motion

The motion handling of the SJ8500 is great. The response time is fast, resulting in only a very short trail following moving objects. The backlight flickers when it dims, and although this isn't noticeable to some people it does result in slightly less smooth motion. Unfortunately, it is not possible to increase the amount of visible flicker to clear up content. Movies played from any source are smooth and the TV is able to interpolate content up to its native refresh rate of 120Hz for those who enjoy the Soap Opera Effect.

8.3 Motion Blur
Show Help
What it is: Amount of blur on fast movement.
When it matters: Sports, video games.
Score components:
LG SJ8500 Motion Blur Picture LG SJ8500 Response Time Chart
80% Response Time
Show Help
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
:
6 ms
100% Response Time
Show Help
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
:
14.3 ms

The response time is great, so only a short trail can be seen following fast-moving objects. This is similar to the UH8500 from 2016.

2.8 Image Flicker
Show Help
What it is: Luminosity pattern when displaying images
When it matters: Sports, video games, when TV is used as a PC monitor
Score components:
LG SJ8500 Backlight Picture
PWM Dimming Frequency
Show Help
What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
120 Hz
BFI
Show Help
What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in sports or video games
Good value: Yes
:
No
BFI Frequency
Show Help
What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye tracking blur in sports or video games
Good value: 60 Hz
:
120 Hz
BFI In Game Mode
Show Help
What it is: Option to insert black frames when in the best settings for gaming
When it matters: Reducing eye tracking blur for video games
Good value: Yes
:
No

The TV uses PWM at 120Hz to dim the backlight, starting at 100/100 backlight setting. Lowering the setting shortens the duty cycle, while amplitude remains nearly constant down to very low backlight settings. Backlight PWM helps clear up motion slightly, but results in duplications following fast-moving objects, visible in the motion blur box. Like with other LG TVs, there is no option to reduce the flicker frequency and use black frame insertion to clear up fast-paced content.

10 24p Playback
Show Help
What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Judder-free 24p
Show Help
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
Show Help
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
Show Help
What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
Yes

The SJ8500 can display 24 movies without judder playing from 24p sources like DVDs or Blu-rays and also from 60p/60i sources like cable boxes. This is great results, especially for people that are sensitive to judder.

To remove judder from any sources, the 'Real Cinema' option from the 'Picture Options', must be turned on. We found that this option was able to remove judder from 24p movies without problems. During our testing, we also experimented with the 'TruMotion' option and we found out that while set to 'User' with both sliders ('De-Judder' and 'De-Blur') set to 0, the SJ8500 was also able to remove judder and this without adding any soap opera effect. So either option could be used to remove judder.

10 Motion Interpolation
Show Help
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.
Motion Interpolation (30 fps)
Show Help
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 SJ8500 Motion Interpolation (30 fps) Picture
Motion Interpolation (60 fps)
Show Help
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
LG SJ8500 Motion Interpolation (60 fps) Picture

The SJ8500 has a 120Hz panel and can interpolate lower frame rate content. There are some bugs in the interpolation which causes more stuttering than usual, especially with our full-screen pattern. To enable motion interpolation (also called the soap opera effect) set 'TruMotion' to 'User'. For a 30fps source increase 'De-Judder' and for a 60fps source increase 'De-Blur'. The 120Hz panel can produce a strong soap opera effect like the UH8500 from 2016.

9.7

Inputs

Show Help
Score components:

The SJ8500 can play nearly any content, including HDR. It has outstandingly low input lag which is good enough for even competitive gamers.

9.6 Input Lag
Show Help
What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
4k @ 60Hz
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.1 ms
1080p @ 60Hz
Show Help
What it is: Lowest input lag possible on TV with a 1080p @ 60Hz input.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.0 ms
4k @ 60Hz + HDR
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz with HDR.
When it matters: HDR Video games.
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.0 ms
1080p @ 60Hz + HDR
Show Help
What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz with HDR.
When it matters: HDR video games from a console outputting a 1080p signal.
Good value: < 40 ms
Noticeable difference: 15 ms
:
14.9 ms
4k @ 60Hz Outside Game Mode
Show Help
What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz 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
:
57.0 ms
1080p @ 60Hz Outside Game Mode
Show Help
What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz 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
:
40.2 ms
4k @ 60Hz @ 4:4:4
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:4:4.
When it matters: PC Monitor
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.1 ms
1080p @ 60Hz @ 4:4:4
Show Help
What it is: Lowest input lag possible on TV when displaying 1080p @ 60Hz @ 4:4:4
When it matters: PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.0 ms
4k @ 60Hz @ 4:4:4 + 8 bit HDR
Show Help
What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:4:4 with HDR enabled at 8 bit
When it matters: PC Monitor with an HDR capable graphic card
Good value: < 40 ms
Noticeable difference: 15 ms
:
15.0 ms
1080p @ 60Hz @ 4:4:4 + HDR
Show Help
What it is: Lowest input lag possible on TV when displaying 1080p @ 60Hz @ 4:4:4 with HDR
When it matters: PC monitor with an HDR capable graphics card
Good value: < 40 ms
Noticeable difference: 15 ms
:
14.9 ms
4k With Interpolation
Show Help
What it is: Lowest input lag for 4k 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
:
98.6 ms
1080p With Interpolation
Show Help
What it is: Lowest input lag for 1080p 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
:
81.9 ms

Outstanding low input lag, good enough for even competitive gamers. Normally only the 'Game' picture mode has low input lag, but when the input's icon is set to 'PC' all picture modes have the same low input lag and display proper 4:4:4 color (though some settings are disabled). This input lag is a huge improvement over last year's UH8500.

10 Supported Resolutions
Show Help
What it is: Different resolutions supported by TV.
When it matters: PC monitor usage.
Score components:
  • 20% 1080p @ 60Hz @ 4:4:4
  • 20% 1080p @ 120Hz
  • 20% 4k @ 30Hz @ 4:4:4
  • 20% 4k @ 60Hz
  • 20% 4k @ 60Hz @ 4:4:4
1080p @ 60Hz @ 4:4:4
Show Help
What it is: Crisp text on 1060p @ 60 hz signal.
When it matters: PC productivity and 60 fps gaming.
:
Yes
1080p @ 120Hz
Show Help
What it is: 120 fps 1080p signal supported.
When it matters: PC gaming.
:
Yes
4k @ 30Hz @ 4:4:4
Show Help
What it is: Crisp text on 4k @ 30 hz signal.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz
Show Help
What it is: 60 fps 4k signal supported.
When it matters: PC productivity and gaming.
:
Yes
4k @ 60Hz @ 4:4:4
Show Help
What it is: Crisp text on 4k @ 60 hz signal.
When it matters: Productivity and 60 fps gaming in 4k.
:
Yes

All 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 the port used. 4:4:4 color is only displayed properly when the input's icon is set to 'PC' (aka PC mode). With webOS update 3.6 LG has fixed the PC mode HDR issue, so now 4:4:4 color is properly displayed in HDR content in PC mode. 120 Hz is listed as a possible resolution on a PC, so no custom resolution is needed.

Side Inputs
Rear Inputs
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
Show Help
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
Show Help
What it is: Better format, due to its dynamic nature.
When it matters: Currently, only available via streaming.
:
Yes
5.1 Passthrough ARC Dolby Digital
Show Help
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
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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
Show Help
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
Show Help
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 : Yes (HDMI 1,2,3,4)
ARC : Yes (HDMI 2)
USB 3 : Yes (1)
HDCP 2.2 : Yes (HDMI 1,2,3,4)
CEC : Yes
MHL : No
Variable Analog Audio Out : No

7.3

Sound Quality

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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 SJ8500 is nothing exceptional, but it does better than average. It has the advantage of being able to be tuned for the room, which does a good job at reducing the effects of resonance. It's still not good enough to skip getting an external solution for a better experience though.

7.2 Frequency Response
Show Help
What it is: How accurately the sound level of each frequency is being produced.
When it matters: For a balanced and neutral sound.
LG SJ8500 Frequency Response
Low-Frequency Extension
Show Help
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
:
71.27 Hz
Std. Dev. @ 70
Show Help
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
:
3.02 dB
Std. Dev. @ 80
Show Help
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
:
3.0 dB
Std. Dev. @ Max
Show Help
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
:
6.29 dB
Max
Show Help
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
:
93.8 dB SPL
Dynamic Range Compression
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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
:
6.26 dB

Using the magic remote and LG's 'Magic Sound Tuning' feature, the SJ8500 produces a decent frequency response. it still suffers from a great amount of compression at higher volumes, but it is fairly balanced and won't have issues such as inaudible dialog.

7.3 Distortion
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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 SJ8500 Total Harmonic Distortion
Weighted THD @ 80
Show Help
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
:
0.034
Weighted THD @ Max
Show Help
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
:
0.535
IMD @ 80
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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
:
1.05 %
IMD @ Max
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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
:
15.25 %

The SJ8500's distortion, while better than average is nothing remarkable. THD is notably decent at high volumes, which is unusual.

8.2

Smart Features

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Score components:
  • 42% Interface
  • 2% Ads
  • 37% Apps and Features
  • 16% Remote
  • 3% Remote App
LG SJ8500 Smart TV Picture
Smart OS : WebOS
Version : 3.5

The SJ8500 runs LG's webOS smart platform, which has a lot of features and low level options while still being easy to navigate. The remote has a few buttons that open quick menus to easily change common settings, yet digging deeper into the interface reveals many low level options. The remote has a few smart features that make navigation even easier. When the remote is pointed at the screen a cursor follows its movements, allowing deft users to select their target directly. The remote also has a microphone for voice search.

8.5 Interface
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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
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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
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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
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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
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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.
:
8 s
Advanced Options
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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 TV's interface is split into three sections: settings, inputs and apps. Each has their own button on the remote, a quick menu with commonly used entries, and a full menu with advanced options. This makes the interface fast and easy to navigate, but the separated nature may be confusing to first time users.

0 Ads
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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 SJ8500 Ads Picture
Ads
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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
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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
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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
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What it is: Whether the suggested content feed in the home menu can be removed or hidden
:
No

There are ads in the recommended sites of the web browser, in voice search results and in the LG Content Store. There is no way to opt out of them.

8.0 Apps and Features
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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 SJ8500 Apps Picture
App Selection
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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
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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
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What it is: Whether apps on a phone or tablet can cast content to the TV.
:
Yes
USB Drive Playback
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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
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What it is: Whether HDR files played from a USB drive can be displayed properly.
:
Yes
HDR in Netflix
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What it is: Whether HDR content on Netflix can be played back in HDR using the native Netflix app.
:
Yes
HDR in Amazon Video
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What it is: Whether HDR content on Amazon Video can be played in HDR using the native Amazon Video app.
:
Yes
HDR in YouTube
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What it is: Whether HDR content on YouTube can be played in HDR using the native YouTube app.
:
Yes

Many popular apps come preinstalled such as Netflix, YouTube, Amazon Video. More apps and content can be downloaded from the LG Content Store. Apps run fairly smoothly with minimal lag.

9.0 Remote
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What it is: The usability and features of the TV's physical remote.
Score components: Subjectively assigned
LG SJ8500 Remote Picture
Size
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What it is: How big the remote is
:
Large
Voice Control
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What it is: The capabilities of the TV's voice control feature
:
Content Search Only
CEC Menu Control
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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
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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 SJ8500 uses LG's excellent Magic Remote, which is nearly unchanged from that of the UH8500. When the remote is pointed at the screen a cursor follows its movement. The movement of the pointer is very sensitive and takes some getting used to, but it can be used to select menu items directly, without clicking through the whole list. The remote also has a microphone for voice search, which works well. At the center of the navigation pad is a scroll wheel that doubles as the select button, so menu items can be scrolled through quickly with the scroll wheel, then selected by pressing down on it, all without moving your thumb from the wheel.

7.0 Remote App
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What it is: The features of the official phone and tablet app for the TV.
Score components: Subjectively assigned
LG SJ8500 Remote App Picture
Acts as the Remote
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What it is: Whether the remote app can emulate all the buttons of the physical remote.
:
Yes
Launches Apps and Inputs
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What it is: Whether the remote app can launch the TV's apps and change between its inputs.
:
Both
Inputs Text in YouTube
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What it is: Whether the remote app can enter text for YouTube searches.
:
No
Inputs Text in Netflix
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What it is: Whether the remote app can enter text for Netflix searches.
:
No
Streams Device Files
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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
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What it is: Whether the app can change all or some of the settings on the TV, such as the backlight.
:
No
Voice Control
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What it is: Whether the remote can send voice commands to the TV.
:
No

The webOS remote app has a few useful features, but is missing other common remote app features such as text entry.

TV Controls
LG SJ8500 Controls Picture

On the TV's underside there is a power button and four direction buttons. Pressing the power button opens a small round menu with power, inputs and settings. Choosing settings lets you navigate the entire settings menu.

In The Box
LG SJ8500 In The Box Picture

  • Manual
  • Batteries
  • Remote
  • Composite Adapter
  • Cable management strap

Misc
Power Consumption : 61 W
Power Consumption (Max) : 128 W
Firmware : 03.60.09

Differences between Sizes and Variants

We tested the 55" (55SJ8500) and expect, for the most part, our review to be valid for the other available sizes.

If someone comes across a different type of panel or if their LG SJ8500 doesn't correspond to our review, let us know and we will update the review.

Size Model
55" 55SJ8500
65" 65SJ8500

Compared to other TVs

LG SJ8500 Group Shot Picture
Top left: Vizio P Series 2016 (P65-C1). Bottom left: Sony X800E (XBR43X800E). Middle: LG SJ8500 (55SJ8500). Top right: Sony X900E (XBR55X900E). Bottom right: Samsung MU9000 (UN55MU9000).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The SJ8500 is a good LED TV, but it is quite expensive for the performance it delivers. Most of the time,you will be better off with a competing TV in its price range.

Vizio P Series 2016
50" 55" 65" 75"

The P Series is the high-end LED TV from Vizio's product line. It has much better picture quality in a dark room than the SJ8500, but its viewing angle isn't very good, causing it to look worse if viewed from the side. If you're mostly viewing from directly in front and want better picture quality, go for the P Series.

Sony X800E
43" 49" 55"

The Sony X800E 4k LED TV performs almost exactly the same as the SJ8500. It features Android 7.0 for its smart platform, which isn't quite as good as LG's WebOS 3.5. Unless your usage is focused on gaming and you want the lowest input lag, go for the X800E since it is quite a bit cheaper.

Sony X900E
49" 55" 65" 75"

The X900E is a mid-range LED TV from Sony that features full array local dimming. It's slightly more expensive than the SJ8500, but it performs a lot better in most aspects. It gets significantly brighter, making it a better choice for HDR, and it's overall picture quality is much better, since its blacks are deeper and more uniform. Unless you have a very wide living room and often watch from the side, the X900E is a better pick.

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

The Samsung MU8000 is a mid-range 4k LED TV with good picture quality in a dark room. It doesn't have the wider viewing angles found on the SJ8500, but it's a little brighter and has deeper and more uniform blacks. Depending on your usage, both are good choices, so pick the SJ8500 if it's mostly used in a well-lit and wide living room, and the MU8000 if you almost always watch from the front.

Conclusion
SEE PRICE
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7.3Mixed Usage
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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 SJ8500 is pretty versatile and has some decent picture quality. Its wide viewing angle makes it a good choice if you have viewing positions to the sides of the TV.
6.6Movies
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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:
Mediocre TV for movies in a dark room. The SJ8500 suffers from important black uniformity issues causing dark scenes to have pale blotches and a dirty look. The blacks themselves also aren't very deep and look gray in a darker viewing environment.
7.6TV Shows
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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 for watching TV shows. The SJ8500 works well for afternoon watching since it handles reflections well and has a wide viewing angle. The WebOS 3.5 platform is also excellent, making accessing content very easy.
7.2Sports
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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.
Score components:
Good TV for sports watching. The SJ8500 has excellent handling of motion and little motion motion blur. Its screen uniformity leaves a bit to be desired though, causing corners and edges to darken a bit. There is no major blotches though, which is good.
7.9Video Games
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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. The SJ8500 has very low input lag and motion blur, making it suitable for even more competitive gamers.
6.8HDR Movies
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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.
Good TV for HDR movies. The SJ8500 can display a wide range of colors without any major gradations. Unfortunately though, it could be brighter, and it doesn't have a very effective local dimming feature.
7.6HDR Gaming
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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. Input lag is low, and the brightness boost gives a decent effect.
7.8PC Monitor
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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.
The SJ8500 is suitable for use as a PC monitor. It supports the essential resolutions, as well as 1080p @ 120hz making a good choice for PC gaming. Its wide viewing angle helps as well.
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Questions & Answers

2 ANSWERED QUESTIONS
30
Additional Review Notes
Update 06/26/2017: Our 55SJ8500 has developed a crack in the panel (behind the glass) and appears to have a short circuit behind the frame of the TV. We don't know if this was caused by ourselves (such as a knock from moving the TV) or if it is due to a manufacturing defect. We will update this as we obtain more information. Please let us know if anyone else experiences this issue.
20
Since you won't be reviewing the SJ8570 (marked as rejected), do you have any reason to believe that particular aspects would be significantly different from the model you reviewed and, if so, which ones? (I'm particularly interested if the input lag would remain as excellent) Thanks!
The input lag is pretty consistent across LG's range of LCD TVs, so we expect it to be about the same for the large SJ8570. In general, since it is going to use a similar IPS panel as the SJ8500, the performance should be very close. Large TVs have a higher chance to get panel uniformity issues because of manufacturing difficulties, which might be problematic since LG's smaller TVs don't do too great on that aspect either.
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