LG UK6570 TV Review

Tested using Methodology v1.5
Updated Oct 09, 2018 at 09:29 am
LG UK6570 Picture
Mixed Usage
Value for price beaten by
: no price info
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
This TV was replaced by the LG UM7300
Type LED
IPS (except 70")
Resolution 4k

The LG UK6570PUB is a good 4k IPS TV with wide viewing angles and outstanding low input lag, the best we've tested so far on a TV. It has excellent gradient handling and a fast response time. It has excellent reflection handling and good SDR brightness, good for daytime viewing. Unfortunately, it doesn't perform well in a dark room, since it can't produce deep blacks and has poor black uniformity. It also isn't great for HDR, as it isn't very bright in HDR and lacks a wide color gamut.

Our Verdict

6.9 Mixed Usage

The LG 75UK6570 is a good TV for most uses. It is well suited for gaming in SDR or watching TV shows and sports during the day. Unfortunately, dark room performance might be disappointing to some people, and although it supports HDR, there is little benefit to it as it lacks a wide color gamut and isn't very bright in HDR. The wide viewing angles, low input lag, and chroma 4:4:4 support make it a great choice for a computer monitor.

  • Image remains accurate when viewed at an angle
  • Excellent low input lag
  • Disappointing dark room performance
  • HDR performance is lacking
6.0 Movies

The LG UK6570PUB is a mediocre TV for watching movies in a dark room. It has a decent contrast ratio, but inadequate black uniformity, so blacks appear gray in a dark room. It also lacks a local dimming feature. It is able to remove judder from true 24p sources like a Blu-ray player, but not when they are being played from a cable box that embeds the movie in a 60p signal.

7.7 TV Shows

This is a very good TV for watching TV Shows during the day. It has good peak brightness in SDR and excellent reflection handling, and the wide viewing angles make it great for watching TV while doing chores around the house. Older sub-1080p content is displayed well, as the UK6570 doesn't use an RGBW sub-pixel arrangement.

7.4 Sports

Good TV for watching sports. It has a fast response time, but there is a short blur trail behind fast moving objects. It also has mediocre gray uniformity, and there is noticeable DSE that may bother some people. It is bright enough in SDR for most rooms, and has excellent reflection handling. It also has wide viewing angles, great for watching a game with a group of friends.

7.5 Video Games

This TV is great for playing video games. It has the lowest input lag we've measured on a TV, great for even the most competitive gamers. It has a fast response time, so motion is clear with only a short blur-trail, but the 120 Hz PWM flicker may bother some people and causes duplications. It supports most common input resolutions, but it doesn't support 1440p or 120 Hz.

5.8 HDR Movies

The TV is only mediocre for watching movies in HDR. Unfortunately, it can't get very bright in HDR and doesn't have a wide color gamut. It also has only decent contrast and disappointing black uniformity, so dark room performance is disappointing. It also lacks a local dimming feature.

6.9 HDR Gaming

This TV is good for HDR gaming. It has outstanding low input lag, with a fast response time, so motion looks clear and games are responsive. Unfortunately, HDR doesn't add much, as it doesn't have a wide color gamut and isn't very bright in HDR. It also doesn't perform very well in a dark room, as it has only decent contrast, disappointing black uniformity, and lacks a local dimming feature.

7.9 PC Monitor

The UK6570 is a very good TV for use as a PC monitor. It has outstanding low input lag, ensuring a responsive experience. Chroma 4:4:4 is displayed perfectly, so text looks clear, and it has wide viewing angles, so the sides of the screen remain accurate when sitting fairly close to the TV. It also has a fast response time, so motion looks clear, and there is no risk of temporary image retention or permanent burn-in.

  • 6.9 Mixed Usage
  • 6.0 Movies
  • 7.7 TV Shows
  • 7.4 Sports
  • 7.5 Video Games
  • 5.8 HDR Movies
  • 6.9 HDR Gaming
  • 7.9 PC Monitor
  1. Update 5/21/2020: Converted to Test Bench 1.5.
  2. Update 2/21/2020: Converted to Test Bench 1.4.
  3. Update 2/28/2019: Converted to Test Bench 1.3.

Test Results

Curved No

The LG UK6570PUB has a great design. The stand holds the TV well, but it does wobble a bit if nudged and the stand is nearly the full width of the TV, so you'll need a big desk if you aren't planning on VESA mounting it. The back of the TV is one large metal panel, and while it isn't loose, it doesn't seem very solid and may dent easily. The overall build quality is good, and there shouldn't be any issues with it.


The stand is nearly the full width of the TV, and requires a large table if you don't plan on wall mounting it. The top of the stand is plastic, but the main structure of the stand is made of metal.

Footprint of the 75" stand: 60.5" x 13.6"

Wall Mount VESA 600x400

The back of the LG 75UK6570PUB is very plain. There is a single, large metal panel covering the entire back of the TV. No thought was given to cable management, there is only a single plastic cable tie included in the box.

Borders 0.84" (2.1 cm)

The borders are thicker than some similar models, including the UK7700. There is a small gap between the outer panel and the display, but this isn't really noticeable under normal viewing conditions.

Max Thickness 3.62" (9.2 cm)

The LG UK6570PUB is one of the thickest TVs we've tested. It can be placed fairly close to a wall, but due to the stand design it can't be placed flush with a wall unless VESA mounted.

Build Quality

The LG UK6570PUB has good build quality. There are no issues with most of the TV, but the back panel is a single sheet of thin metal that may dent easily. Overall, it is very similar to the UK7700.

Picture Quality
Picture Quality
Native Contrast
1313 : 1
Contrast with local dimming

The TV has a decent contrast ratio, worse than most VA panels but above average for an IPS. Unfortunately, there is no local dimming feature to improve the contrast ratio.

Note: the 70" model has a VA panel, and will likely have a better contrast ratio.

Picture Quality
Local Dimming
Local Dimming

The TV does not have a local dimming feature. The above video is provided for reference only.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
266 cd/m²
SDR Peak 2% Window
278 cd/m²
SDR Peak 10% Window
278 cd/m²
SDR Peak 25% Window
277 cd/m²
SDR Peak 50% Window
277 cd/m²
SDR Peak 100% Window
277 cd/m²
SDR Sustained 2% Window
278 cd/m²
SDR Sustained 10% Window
277 cd/m²
SDR Sustained 25% Window
277 cd/m²
SDR Sustained 50% Window
277 cd/m²
SDR Sustained 100% Window
277 cd/m²

The LG UK6570 has good peak brightness in SDR. The brightness hardly changes at all with different content, which is great. The real scene brightness is a bit dimmer due to the TV's uniformity.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
299 cd/m²
HDR Peak 2% Window
237 cd/m²
HDR Peak 10% Window
330 cd/m²
HDR Peak 25% Window
327 cd/m²
HDR Peak 50% Window
326 cd/m²
HDR Peak 100% Window
325 cd/m²
HDR Sustained 2% Window
236 cd/m²
HDR Sustained 10% Window
226 cd/m²
HDR Sustained 25% Window
325 cd/m²
HDR Sustained 50% Window
324 cd/m²
HDR Sustained 100% Window
324 cd/m²

Mediocre HDR brightness. Small highlights in some scenes aren't very bright, but large bright scenes are displayed at the TV's maximum brightness. There is some variation in brightness depending on content, which can be distracting.

If you find HDR content too dim, take a look at our recommended HDR settings.

Picture Quality
Gray Uniformity
50% Std. Dev.
6.343 %
50% DSE
0.219 %
5% Std. Dev.
0.833 %
5% DSE
0.091 %

Mediocre gray uniformity. There are bands visible throughout the screen, and noticeable dirty screen effect that is likely to bother sports fans. In near-black scenes, it is less noticeable.

Picture Quality
Viewing Angle
Color Washout
29 °
Color Shift
51 °
Brightness Loss
33 °
Black Level Raise
70 °
Gamma Shift
32 °

The LG 75UK6570PUB has mediocre viewing angles, similar to the UK6300. The contrast stays relatively flat regardless of viewing angle, which is typical for IPS panels. Colors lose accuracy and the brightness drops at a small angle.

Note: the 70" model has a VA panel and is expected to have worse viewing angles.

Picture Quality
Black Uniformity
Native Std. Dev.
2.058 %
Std. Dev. w/ L.D.

The LG UK6570PUB has disappointing black uniformity. There is noticeable clouding throughout the screen, but there is no flashlighting as the TV is direct-lit.

Picture Quality
Screen Finish
Total Reflections
3.1 %
Indirect Reflections
0.4 %
Calculated Direct Reflections
2.7 %

The TV has excellent reflection handling. Direct reflections are significantly reduced in intensity, and there is no purple tint like some higher-end anti-reflective coatings.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6666 K
Picture Mode
Expert (Dark Room)
Color Temp Setting
Warm 2
Gamma Setting

Out of the box, the TV is one of the most accurate displays we have tested. White balance dE and color dE are very low, and the color temperature is only slightly cool. The average gamma is close to our target of 2.2, but fluctuates depending on the input, so some scenes are overly bright and some are overly dark. Most people won't feel the need to have the TV professionally calibrated.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6495 K
White Balance Calibration
20 point
Color Calibration
Auto-Calibration Function

After calibration, the TV is nearly perfect. The white point is essentially perfect, and the color error was corrected a bit, but not entirely. Color temperature is almost perfect, and gamma is more uniform.

You can see our recommended settings here, and our recommended HDR settings here.

Picture Quality
480p Input

Older 480p content is displayed well without any obvious upscaling artifacts.

Picture Quality
720p Input

720p content looks good, and is upscaled without any issues.

Picture Quality
1080p Input

1080p content, like from a Blu-ray player or non-4k console looks great, almost as good as native 4k content.

Picture Quality
4k Input

4k content is displayed perfectly without any issues. Unlike the UK6300, the UK6570PUB does not use the less accurate RGBW pixel structure.

Picture Quality
8k Input
Picture Quality
Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
79.89 %
DCI P3 uv
86.47 %
Rec 2020 xy
57.67 %
Rec 2020 uv
64.19 %

The TV has a decent color gamut, but it falls short of the wide color gamut necessary for HDR content to look great.

In the 'Standard' Picture Mode, the EOTF does not follow our input stimulus, and most scenes are too dark. Unlike most TVs, we recommend setting Dynamic Contrast to 'High'. We tested the TV with this setting, as without it the TV is too dim. In PC mode, the UK6570 is even dimmer, and in Game mode it is even worse.

If you find HDR content too dim, setting the Backlight to '100' with Dynamic Tone Mapping enabled and Dynamic Contrast on 'High' improves the EOTF, and it almost follows the input stimulus perfectly.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
71.6 %
10,000 cd/m² DCI P3 Coverage ITP
25.9 %
Normalized Rec 2020 Coverage ITP
50.4 %
10,000 cd/m² Rec 2020 Coverage ITP
18.2 %

The TV has mediocre color volume. In the P3 color space, it can't produce bright saturated colors. In Rec 2020, it can't fill out the entire gamut and overly saturated colors aren't very bright.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.080 dE
Green (Std. Dev.)
0.088 dE
Blue (Std. Dev.)
0.072 dE
Gray (Std. Dev.)
0.084 dE

Excellent gradient handling. There is very little banding in areas of similar color.

Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.00 %
IR after 2 min recovery
0.00 %
IR after 4 min recovery
0.00 %
IR after 6 min recovery
0.00 %
IR after 8 min recovery
0.00 %
IR after 10 min recovery
0.00 %

There is no temporary image retention, which is great.

Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk

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

Response Time
80% Response Time
4.5 ms
100% Response Time
15.3 ms

The LG UK6570PUB has an excellent fast response time. There are duplications in moving objects due to the 120Hz backlight, and this may bother some people. There is significant overshoot in some transitions, but this shouldn't cause any issues.

PWM Dimming Frequency
120 Hz

Unfortunately, the LG UK6570 uses PWM to dim the backlight, and there is flicker at all backlight levels. It flickers at 120 Hz, which can be noticeable to most people and may bother some.

Black Frame Insertion (BFI)
Optional BFI
Min Flicker for 60 fps
120 Hz
60 Hz for 60 fps
120 Hz for 120 fps
Min Flicker for 60 fps in Game Mode
120 Hz

The LG UK6570PUB does not have an option to adjust the backlight flicker to improve motion blur. Since the backlight flickers at 120 Hz by default, there would be little benefit to further reducing the flicker frequency, especially since 60 Hz flicker bothers many people.

Motion Interpolation
Motion Interpolation (30 fps)
Motion Interpolation (60 fps)

The TV has a motion interpolation feature, but is limited to interpolating 30 fps content up to 60 fps, due to the 60 Hz panel. The 86" model has a 120 Hz panel, and is likely able to interpolate up to 120 fps.

Motion interpolation is enabled by setting TruMotion to 'User', and adjusting the De-Judder slider. Enabling motion interpolation can cause artifacts in some scenes.

Frame Hold Time @ 24 fps
26.4 ms
Frame Hold Time @ 60 fps
1.4 ms

The LG 75UK6570 does stutter a bit with 24p content, but not as much as many other TVs.

24p Judder
Judder-Free 24p
Judder-Free 24p via 60p
Judder-Free 24p via 60i
Judder-Free 24p via Native Apps

The LG 75UK6570PUB is able to remove judder from 24p sources and native apps only. It cannot remove judder from embedded sources, such as when watching a 24p movie from a cable box that sends 60p.

The Real Cinema feature must be enabled to remove judder from 24p sources.

Variable Refresh Rate
Native Refresh Rate
60 Hz (except 86")
Variable Refresh Rate
G-SYNC Compatible
4k VRR Maximum
4k VRR Minimum
No VRR support
1080p VRR Maximum
1080p VRR Minimum
No VRR support
1440p VRR Maximum
1440p VRR Minimum
No VRR support
VRR Supported Connectors
No VRR support

The 70" and 75" UK6570s have a 60 Hz native refresh rate, the 86" model has a 120 Hz native refresh rate.

Input Lag
1080p @ 60 Hz
10.7 ms
1080p @ 60 Hz Outside Game Mode
126.8 ms
1440p @ 60 Hz
4k @ 60 Hz
10.9 ms
4k @ 60 Hz + 10 bit HDR
11.2 ms
4k @ 60 Hz @ 4:4:4
10.8 ms
4k @ 60 Hz Outside Game Mode
127.0 ms
4k @ 60 Hz With Interpolation
127.1 ms
8k @ 60 Hz
1080p @ 120 Hz
1440p @ 120 Hz
4k @ 120 Hz
1080p with Variable Refresh Rate
1440p with VRR
4k with VRR