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  1. Table of Contents
  2. Intro
  3. Design
    1. Stand
    2. Back
    3. Borders
    4. Thickness
  4. 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
  5. Motion
    1. Motion Blur
    2. Image Flicker
    3. 24p Playback
    4. Motion Interpolation
  6. Inputs
    1. Input Lag
    2. Supported Resolutions
    3. Side Inputs
    4. Rear Inputs
    5. Total Inputs
    6. Inputs Specifications
  7. Sound Quality
    1. Frequency Response
    2. Total Harmonic Distortion
  8. Smart Features
    1. Apps
    2. Ads
    3. TV Controls
    4. Remote
    5. In The Box
    6. Misc
  9. Sizes and Variants
  10. Compared
  11. Conclusion
  12. Q&A
Reviewed on Jul 08, 2016 , Eric Bousquet, Justin St-Laurent

LG LH5750
TV REVIEW

Usage Ratings - Version 1.0
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Test Benches:

  • 1.1: Summer 2017
  • 1.0: Winter 2015
  • 0.9: Winter 2014
  • 0.8: Winter 2013
6.6 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:
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.
: Not at the latest test bench
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.
: Not at the latest test bench
6.3 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:
6.7 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:
6.7 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:
7.3 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.
Score components:
5.5 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.
Score components:
4.5 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.
5.7 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.
Score components:
Type : LED
Resolution : 1080p
Refresh Rate : 60 Hz

The LG 55LH5750 LED TV offers an average picture quality for movies and TV shows, however sports fans won't be impressed by the average motion performance and bad screen uniformity. The easy to use smart interface is a strength which will appeal to a broad audience.

Test Results
Design 8.5
Picture Quality 6.8
Motion 6.0
Inputs 7.5
Sound Quality 6.2
Smart Features 8.5
Pros
  • Excellent smart platform
  • Provides decent living room performance thanks to the brightness and reflections
Cons
  • Dirty screen effect very visible when watching sports
  • Narrow viewing angle
  • Above average motion blur

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8.5

Design

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Score components: Subjectively assigned
LG LH5750 Design Picture
Curved : No

The 55LH5750 looks similar to other competing TVs, such as the TCL FS3750. The all plastic body and stand make it look low-end, but it is quite thin which is good.

Stand
LG LH5750 Stand Picture

The stand is as wide as the TV itself, so requires a large table. It is made of plastic and similar to other low-end LG TVs such as the LF5800.

Footprint of the 55" TV stand: 45.6" x 9.3"

Back
LG LH5750 Back Picture
Wall Mount : Vesa 400x400

The back is quite bulky. Rear inputs may be inaccessible or hard to reach when wall mounted.

Borders
LG LH5750 Borders Picture
Borders : 0.67" (1.7 cm)

Borders are average thickness and made of plastic.

Thickness
LG LH5750 Thickness Picture
Max Thickness : 2.04" (5.2 cm)

Compared to other cheap TVs, the LH5750 is quite thin. This is would be an advantage for wall mounting if the inputs were more accessible.

6.8

Picture Quality

Watching Blu-rays and DVDs on the LG LH5750 will be great in a dark room, because of the good contrast ratio and good black uniformity. Unfortunately, the color spectrum that it can display isn't that great and those sensitive to judder might notice it when watching movies on streaming service and cable.

8.9 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 LH5750 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
:
5453 : 1

The VA panel used in this TV offers a great native contrast ratio. The blacks are really deep and will result in a really good picture quality, especially in a dark room. The 55LH5750 it one of the few LG TVs that use a VA panel.

0 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.
:
No
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.
:
Direct

There is no local dimming option for this specific model. The video is shown only for reference.

7.1 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.
:
278 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 cd/m2
SDR Sustained 10% Window
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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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 cd/m2
SDR Sustained 50% Window
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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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 cd/m2
SDR Sustained 100% Window
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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: > 400 cd/m2
Noticeable difference: 100 cd/m2
:
297 cd/m2

At 297 cd/m², the brightness of this TV makes it an average performer. Since there is no local dimming option on this set, brightness remains same across all the different % size windows. One advantage is that whatever image is shown on screen, the brightness will remain the same.

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.
:
N/A
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: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR 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 HDR signal (if supported).
When it matters: Bright objects, present on screen for a short time; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR 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 HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR 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 HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
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: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR 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 HDR signal (if supported).
When it matters: Bright highlights, persistent throughout a scene; especially for HDR content.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
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: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR 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 HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
HDR Sustained 50% Window
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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: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A
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: > 1000 cd/m2
Noticeable difference: 100 cd/m2
:
N/A

This TV does not support HDR.

5.4 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 LH5750 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%
:
4.079 %
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%
:
0.287 %

The gray uniformity of the LG LH5750 is very bad. You can almost see the position of each LED of the backlight. Dirty screen effect will definitely be present when watching sport or any other content where large areas of uniform color are present on screen.

4.2 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.
:
VA
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°
:
20 °
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°
:
30 °
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°
:
17 °

The 55LH5750 TV offers an average off axis viewing performance with a loss of color saturation typical of VA panels. Some TVs using VA panel have marginally better performance (like the TCL US5800), but even then, it is far from what you will get with an IPS or an OLED TV.

Update: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results.

9.7 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 LH5750 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: < 2%
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.
:
0.591 %

The black uniformity is pretty good on this TV. On our unit, there isn't really any issues like clouding or flash lighting.

8.5 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 LH5750 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.
:
8 Bit

The 8 bit gradations can be seen, but does not suffer from any obvious banding problem in any specific color.

8.2 Pre Calibration
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What it is: TV's color accuracy before a full calibration. Only the picture mode and backlight level were changed.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
LG LH5750 Pre Calibration Picture LG LH5750 Pre Gamma Curve Picture LG LH5750 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
:
3.56
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
2.7444
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

Out of the box, the pre-calibration of the LG LH5750 was decent. There was very little issues with the white balance dE as well as the color dE.

9.4 Post Calibration
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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 LH5750 Post Calibration Picture LG LH5750 Post Gamma Curve Picture LG LH5750 Post 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 videos.
Good value: < 3
Noticeable difference: 1
:
0.51
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.6396
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
:
2.19

The calibration of the LG LH5750 was done with ease. Since LG has a 21 point system rather than other TVs 10 points, issues could be resolved precisely.

8.0 480p Input
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What it is: Quality of a 480p input.
When it matters: Standard definition TV, DVDs.
Score components: Subjectively assigned
LG LH5750 480p Picture

DVDs looks good without any upscaling problems.

8.0 720p Input
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What it is: Quality of a 720p input.
When it matters: HD channels, some streaming videos.
Score components: Subjectively assigned
LG LH5750 720p Picture

The LG LH5750 can upscale cable channels without losing any detail of the original content.

10 1080p Input
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What it is: Quality of a 1080p input.
When it matters: Blu-rays, streaming video, video files, video games.
Score components: Subjectively assigned
LG LH5750 1080p Picture

Blu-rays looks good and pretty sharp.

0 4k Input
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What it is: Quality of a 4k UHD input.
When it matters: Streaming video, UHD Blu-rays, some PCs.
Score components: Subjectively assigned

6.9 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
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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 LH5750 Color Gamut DCI-P3 Picture
DCI P3 xy
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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%
:
75.58 %
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%
:
82.47 %
Rec 2020 xy
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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%
:
54.70 %
Rec 2020 uv
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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%
:
62.92 %

Changing the 'Color Gamut' to extended allows for a wider gamut. Unfortunately this will still only be enough for Rec. 709 content.

5.5 Color Volume
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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 LH5750 P3 Color Volume Picture
Normalized DCI P3 Coverage
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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 %
:
61.675 %
10,000 cd/m² DCI P3 Coverage
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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.
:
36.517 %
LG LH5750 2020 Color Volume Picture
Normalized Rec 2020 Coverage
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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 %
:
45.096 %
10,000 cd/m² Rec 2020 Coverage
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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.
:
26.734 %

10 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 LH5750 Image Retention Picture
IR after 0 min recovery
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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%
:
0.000 %
IR after 2 min recovery
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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%
:
0.000 %
IR after 4 min recovery
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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%
:
0.000 %
IR after 6 min recovery
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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%
:
0.000 %
IR after 8 min recovery
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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%
:
0.000 %
IR after 10 min recovery
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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%
:
0.000 %

The LG LH5750 does not have any image retention at all. Like many others VA TVs tested before, image displayed for a long period do not get imprinted on screen. This is good for people who play video games for long period on their main TV or want to use it as a PC monitor.

7.5 Reflections
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What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
LG LH5750 Reflections Picture LG LH5750 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%
:
1.9 %
Screen Finish
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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

Reflections are large and diffused on the semi-gloss screen. This helps to reduce the intensity of small lights.

0 3D
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What it is: Optional 3D video capability on TV.
When it matters: 3D movies and videos.
Score components: Subjectively assigned
3D
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What it is: If it can display a picture in 3D.
When it matters: 3D movies & videos.
:
No
3D Type
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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
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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

This TV doesn't support 3D.

Pixels
6.0

Motion

The LG 55LH5750 is quite average when it comes to handling sports. Fast moving objects on the field, such as a football being thrown, will look blurrier than most average TVs. Also, while panning shots occur over a field, you will notice a huge amount of screen uniformity issues.

6.7 Motion Blur
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What it is: Amount of blur on fast movement.
When it matters: Sports, video games.
Score components:
LG LH5750 Motion Blur Picture LG LH5750 Response Time Chart
Response Time
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What it is: How quickly pixels can change color.
When it matters: Fast movement.
Good value: < 20ms
Noticeable difference: 10ms
:
24.1 ms
Overshoot
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What it is: When TV’s pixels adjust too far; how quickly they come back.
When it matters: Fast movement.
Good value: < 10ms
Noticeable difference: 10ms
:
0.0 ms

The response time of this TV is quite average, there are many transition that take longer than most average TVs. As a result there is a long trail that can be seen following the Rtings logo. This will be most noticeable during fast game plays.

2.8 Image Flicker
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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 LH5750 Backlight Picture
PWM Dimming Frequency
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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)
:
120 Hz
BFI
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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
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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
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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

7.1 24p Playback
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What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Judder-free 24p
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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
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What it is: Judder-free movies over 60p signal.
When it matters: Movies from streaming devices (Apple TV, Fire TV, etc.); 60 hz PC signal.
:
No
Judder-free 24p via 60i
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What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
No

The LG is judder-free only when playing 24p content from a 24Hz source. Judder is present on 24p content over a 60Hz signal.

0 Motion Interpolation
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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)
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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.
:
No
Motion Interpolation (60 fps)
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What it is: Whether the TV can take a 60 fps input and heighten the frame rate to at least 100 fps.
When it matters: 60 fps videos. Includes some video games, some sports channels.
:
No

There is no motion interpolation on this TV.

7.5

Inputs

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Score components:

The LH5750 is not the best TV for gamers because of the average motion blur, despite the pretty decent input lag. Those looking to use this TV as a PC monitor should look for another option, since it does not support any of the resolutions tested.

8.4 Input Lag
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What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
1080p @ 60Hz
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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: < 40ms
Noticeable difference: 15ms
:
30.0 ms
1080p With Interpolation
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What it is: Lowest input lag 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: < 40ms
Noticeable difference: 15ms
:
N/A
1080p @ 60Hz Outside Game Mode
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What it is: Input lag in picture modes other than the specific game mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40ms
Noticeable difference: 15ms
:
30.0 ms
1080p @ 60Hz @ 4:4:4
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What it is: Lowest input lag possible on TV when displaying 1080p @ 60Hz @ 4:4:4
When it matters: PC monitor.
Good value: < 40ms
Noticeable difference: 15 ms
:
30 ms
4k @ 60Hz
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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: < 40ms
Noticeable difference: 15 ms
:
N/A
4k @ 60Hz @ 4:4:4
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What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:4:4.
When it matters: PC Monitor
Good value: < 40ms
Noticeable difference: 15 ms
:
N/A
4k @ 60Hz + HDR
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What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz with HDR.
When it matters: HDR Video games.
Good value: < 40ms
Noticeable difference: 15 ms
:
N/A
4k @ 60Hz @ 4:4:4 + 8 bit HDR
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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: < 40ms
Noticeable difference: 15 ms
:
N/A

The input lag varies a little bit between each handshakes but in the end, we were still able to get a good value and it was the same across all the different image settings. Changing the setting to game mode did not improve the input lag.

2.0 Supported Resolutions
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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
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What it is: Crisp text on 1060p @ 60 hz signal.
When it matters: PC productivity and 60 fps gaming.
:
Yes
1080p @ 120Hz
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What it is: 120 fps 1080p signal supported.
When it matters: PC gaming.
:
No
4k @ 30Hz @ 4:4:4
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What it is: Crisp text on 4k @ 30 hz signal.
When it matters: PC productivity and gaming.
:
No
4k @ 60Hz
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What it is: 60 fps 4k signal supported.
When it matters: PC productivity and gaming.
:
No
4k @ 60Hz @ 4:4:4
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What it is: Crisp text on 4k @ 60 hz signal.
When it matters: Productivity and 60 fps gaming in 4k.
:
No

The LH5750 does support chroma 4:4:4 when the input is labeled as PC and since it only a 1080p TV, 4k is not supported.

Side Inputs
Rear Inputs
Total Inputs
HDMI : 2
USB : 1
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (shared)
Composite In : 1 (shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 1
SD/SDHC : 0

Inputs Specifications
HDR10
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What it is: Standard HDR format.
When it matters: Most common format. All UHD Blu-ray discs are required to have it.
:
No
Dolby Vision
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What it is: Better format, due to its dynamic nature.
When it matters: Currently, only available via streaming.
:
No
5.1 Passthrough ARC Dolby Digital
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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
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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
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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 : No
ARC : Yes (HDMI 1)
USB 3 : No
HDCP 2.2 : Yes
CEC : Yes
MHL : No
Variable Analog Audio Out : No

6.2

Sound Quality

The sound performance of the LH5750 is quite average, and should be OK for those who don't want to use an external system. Even a cheap sound bar would be an improvement for those who care a bit more about the audio quality.

Note: Sound Quality test for TVs reviewed before 2017 was performed at 75dB, 85dB, and Max SPL. Starting 2017, the target SPL levels have been changed to 70dB, 80dB, and Max dB SPL.

6.2 Frequency Response
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What it is: Sound level at different frequencies.
When it matters: For balanced sound.
Score components:
LG LH5750 Frequency Response Picture
Std. Dev. @ 70
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What it is: Variance of the sound level at different frequencies.
When it matters: 70 dB.
Good value: < 4 dB
Noticeable difference: 2 dB
:
4.94 dB SPL
Std. Dev. @ 80
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What it is: Variance of the sound level at different frequencies.
When it matters: 80 dB.
Good value: < 4 dB
Noticeable difference: 2 dB
:
5.72 dB SPL
Std. Dev. @ Max
Show Help
What it is: Variance of the sound level at different frequencies.
When it matters: Max volume.
Good value: < 4 dB
Noticeable difference: 2 dB
:
6.66 dB SPL
Max
Show Help
What it is: Max volume on the TV at a distance of 1 meter.
When it matters: For listening to loud audio.
Good value: > 90 dB
Noticeable difference: 2 dB
:
85.3 dB SPL
Low-end Cutoff
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What it is: How low of a frequency at which the bass starts.
When it matters: Movies; gaming.
Good value: < 50Hz
Noticeable difference: 10Hz
:
95.14 Hz

Decent low-end cutoff for a TV, however, the overall response is about average. Also, there are pumping and compression artifact under heavy load, even though this TV doesn't get very loud.

6.3 Total Harmonic Distortion
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What it is: Pureness of a single frequency.
Score components:
LG LH5750 Total Harmonic Distortion Picture
Distortion @ 70
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What it is: Amount of distortion.
When it matters: 70 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.028
Distortion @ 80
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What it is: Amount of distortion.
When it matters: 80 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.058
Distortion @ Max
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What it is: Amount of distortion.
When it matters: 85 dB.
Good value: < 0.100
Noticeable difference: 0.100
:
0.042

Average distortion performance. The overall amount of harmonic distortion at is decent under very light load, however, there is a rise in harmonic distortion as the volume is increased.

8.5

Smart Features

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Score components: Subjectively assigned
LG LH5750 Smart TV Picture
Smart OS : WebOS 3.0

Just like the LG E6 we have reviewed, the LG 55LH5750 also comes loaded with the newly released WebOS 3.0. This means that you can expect a very smooth and responsive smart interface, that doesn't lack applications whatsoever. You can also expect frequent updates and bug fixes. That is all great, but there are still a few flaws, one being the remote and the other being the lack of inputs on this TV. The remote is very basic and quite uncomfortable. The buttons on the remote require some power to press and the IR sensor lacks. In terms of the inputs, the TV only has two HDMI ports,  one only being accessible if you were to wall mount it. You can fix this issue by getting a HDMI switch.

Apps
LG LH5750 Apps Picture

Just like the LG E6, this TV also doesn't lack applications. It has the most demanded applications such as Youtube, Netflix, and Amazon Video. There is a whole list that you can chose from in the 'LG Content Store'.

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:
Ad-free
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What it is: The TV's ability to provide an ad-free experience.
When it matters: When using the smart features.
:
No
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

TV Controls
LG LH5750 Controls Picture

A single button for control is located under the LG logo in the center of the TV.

Remote
LG LH5750 Remote Picture
Remote : Basic

The remote of the LG LH5750 is pretty basic, offering some operations that makes navigating through the smart interface somewhat easier. The remote is made of plastic, and has finicky buttons that just feel unconformable. Also, the IR sensor on the remote itself lacks, pointing right at the TVs sensor is a must. This remote doesn't come with LGs magic remote functionality.

In The Box
LG LH5750 In The Box Picture

  • Remote
  • Batteries
  • Cable management strap
  • Stand attachment
  • Manual

Misc
Power Consumption : 35 W
Power Consumption (Max) : 83 W
Firmware : 03.00.27

Differences between Sizes and Variants

We tested the 55" (55LH5750), the only size available at the moment. There is also a variant called 55LH575A that we expect to have the same picture quality.

If someone comes across a different type of panel or if their LG 55LH5750 doesn't correspond to our review, let us know and we will update the review.

Size Model
55" 55LH5750

Compared to other TVs

LG LH5750 Group Shot Picture
Top left: TCL FS3750 (48FS3750). Bottom left: Vizio D Series 1080p 2016 (D50-D1). Middle: LG LH5750 (55LH5750). Top right: Samsung KU6300 (UN55KU6300). Bottom right: TCL US5800 (55US5800).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The LH5750 is very cheap for an LG TV, however this shows in the lack of features and average performance. In a market segment dominated by TCL and Vizio, these budget brands provide better performance for the same price as the LH5750.

TCL FS3750
40" 48" 55"

The TCL FS3750 is a similary priced TV, with comparable picture quality for watching movies. It offers the advantages of better sports and video game performance though, and a more complete smart interface. The TCL FS3750 is a better pick for most people.

Vizio D Series 1080p 2016
32" 40" 43" 43" 48" 50" 55" 60" 65" 70"

The Vizio D Series 1080p 2016 delivers better overall performance, especially when watching sports or playing video games. For watching low resolution content such as DVDs though, the LG LH5750 provides better upscaling.

Samsung J6200
40" 50" 55" 60" 65"

The Samsung J6200 is definitely an upgrade in picture quality over the budget TVs, however this comes with additional cost. If you've got a bit more to spend and aren't an avid gamer go with the J6200.

TCL US5800
55" 65"

The TCL US5800 is a 4k TV available for around the same price. It has similar overall performance, so a better pick for anyone who is interested in the benefits of 4k blurays or streaming.

Conclusion
SEE PRICE
Amazon.com

The LG LH5750 would probably be fine for most people that are shopping for a budget TV. It is not ideal for any usage, but instead provides consistent all-round performance which is average or below. Only supporting 2 HDMI ports will be an issue for many people, and the bad uniformity will disappoint sports fans.

Usage Ratings - Version 1.0
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Test Benches:

  • 1.1: Summer 2017
  • 1.0: Winter 2015
  • 0.9: Winter 2014
  • 0.8: Winter 2013
6.6 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:
6.3 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:
6.7 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:
6.7 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:
7.3 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.
Score components:
5.5 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.
Score components:
4.5 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.
5.7 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.
Score components:
Questions Found an error?

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Questions & Answers

0 ANSWERED QUESTIONS
We are not taking any more questions for this product because we no longer have it in our lab.