Reviewed on Oct 09, 2018

LG UK6570 TV REVIEW

Usage Ratings - Version 1.3
7.6
Mixed Usage
Value for price beaten by
: not enough data
6.3
Movies
8.1
TV Shows
7.8
Sports
8.4
Video Games
6.3
HDR Movies
7.7
HDR Gaming
8.4
PC Monitor
This TV was replaced by the LG UM7300

Type : LED
Sub-Type
:
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.

Test Results
Design 8.0
Picture Quality 7.3
Motion 7.3
Inputs 9.6
Sound Quality 6.5
Smart Features 7.8
Pros
  • Image remains accurate when viewed at an angle
  • Excellent low input lag
Cons
  • Disappointing dark room performance
  • HDR performance is lacking
  1. Update 2/28/2019: Converted to Test Bench 1.3. Learn more about our versioned test bench system here.

Check Price

8.0

Design

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.

Stand

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"

Back
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
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.

Thickness
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.

Temperature
Maximum Temperature
:
95 °F (35 °C)
Average Temperature
:
90 °F (32 °C)

There are warm bands throughout the TV, likely caused by the backlight zones. They aren't much warmer than the rest of the screen, and there shouldn't be any issues with overheating.

7.5 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.

7.3

Picture Quality

The LG UK6570PUB has decent picture quality. Unfortunately, dark room performance isn't great, as it has only decent contrast, mediocre black uniformity, and lacks a local dimming feature to improve black levels. HDR doesn't look as good as it should, due to sub-par HDR brightness and a lack of a wide color gamut. The image remains accurate when viewed at an angle. Most people will be very satisfied with the color accuracy and white balance out of the box, and there isn't much benefit to having it professionally calibrated. Gradients are displayed with great accuracy, and there is very little banding.

6.5 Contrast
Native Contrast
:
1313 : 1
Contrast with local dimming
:
N/A

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.

0 Local Dimming
Local Dimming
:
No
Backlight
:
Direct

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

7.2 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
SDR ABL
:
0.000

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.

6.1 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
HDR ABL
:
0.029

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.

6.4 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.

7.1 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.

5.9 Black Uniformity
Native Std. Dev.
:
2.058 %
Std. Dev. w/ L.D.
:
N/A

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.

8.8 Reflections
Screen Finish
:
Semi-gloss
Total Reflections
:
3.1 %
Indirect Reflections
:
0.4 %

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.

8.7 Pre Calibration
White Balance dE
:
1.95
Color dE
:
1.64
Gamma
:
2.17
Color Temperature
:
6666 K
Picture Mode
:
Expert (Dark Room)
Color Temp Setting
:
Warm 2
Gamma Setting
:
2.2

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.

9.6 Post Calibration
White Balance dE
:
0.14
Color dE
:
1.17
Gamma
:
2.18
Color Temperature
:
6495 K
White Balance Calibration
:
20 point
Color Calibration
:
Yes
Auto-Calibration Function
:
No

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.

8.0 480p Input

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

8.0 720p Input

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

9.0 1080p Input

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

10 4k Input

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

7.2 Color Gamut
Wide Color Gamut
:
No
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.

6.1 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.

9.0 Gradient
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.

10 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.

10 Permanent Burn-In Risk
Permanent Burn-In Risk
:
No

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.

Pixels
7.3

Motion

The LG UK6570PUB has decent motion handling. It has a fast response time that produces little motion blur, which is great. Unfortunately, it uses PWM to dim the backlight, and there is 120 Hz flicker at all brightness levels, which results in some duplications in motion. There is no option to adjust the flicker frequency. It has a decent motion interpolation feature, but its effectiveness is limited due to the 60 Hz native refresh rate. Movie lovers will be pleased, as it can remove judder from 24p sources and from the native apps.

8.6 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.

4.0 Flicker-Free
Flicker-Free
:
No
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.

5.4 Black Frame Insertion (BFI)
Optional BFI
:
No
Min Flicker for 60 fps
:
120 Hz
60 Hz for 60 fps
:
No
120 Hz for 120 fps
:
N/A
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.

7.0 Motion Interpolation
Motion Interpolation (30 fps)
:
Yes
Motion Interpolation (60 fps)
:
No

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.

7.7 Stutter
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.

7.8 24p Judder
Judder-Free 24p
:
Yes
Judder-Free 24p via 60p
:
No
Judder-Free 24p via 60i
:
No
Judder-Free 24p via Native Apps
:
Yes

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.

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

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

9.6

Inputs

The LG UK6570 has excellent low input lag and supports the most common input resolutions. Unfortunately, there is no 1440p support and the refresh rate is limited to 60 Hz due to the 60 Hz panel on the 70UK6570 and 75UK6570. The 86UK6570 should support a 120 Hz input, as it has a 120 Hz panel. Chroma 4:4:4 is displayed properly, as long as the input label is set to 'PC'.

9.9 Input Lag
1080p @ 60 Hz
:
10.7 ms
1080p @ 60 Hz Outside Game Mode
:
126.8 ms
1440p @ 60 Hz
:
N/A
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
:
N/A
1080p @ 120 Hz
:
N/A
1440p @ 120 Hz
:
N/A
4k @ 120 Hz
:
N/A
1080p with Variable Refresh Rate
:
N/A
1440p with VRR
:
N/A
4k with VRR
:
N/A
8k with VRR
:
N/A
Auto Low Latency Mode (ALLM)
:
No

The LG UK6570PUB has the lowest input lag we have measured on a TV, as long as 'Game' mode is used. Outside of 'Game' mode, the input lag is extremely high. Every measurement is slightly better than the LG UK6300 and UK7700.

7.5 Supported Resolutions
1080p @ 60 Hz @ 4:4:4
:
Yes
1080p @ 120 Hz
:
No
1440p @ 60 Hz
:
No
1440p @ 120 Hz
:
No
4k @ 60 Hz
:
Yes
4k @ 60 Hz @ 4:4:4
:
Yes
4k @ 120 Hz
:
No
8k @ 30 Hz or 24 Hz
:
No
8k @ 60 Hz
:
No

The TV supports the most common resolutions, but it does not support 1440p, even if forced. The 70" and 75" models do not support a 120 Hz input, due to the 60 Hz panel. The 86" model has a 120 Hz refresh rate, but we don't know if it will accept a 120 Hz input.

Input Photos
Total Inputs
HDMI : 4
USB : 2
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (shared)
Composite In : 1 (shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0

The 86" model has one additional USB port.

Inputs Specifications
HDR10
:
Yes
HDR10+
:
No
Dolby Vision
:
No
HLG
:
Yes
3D
:
No
HDMI 2.0 Full Bandwidth
:
Yes (HDMI 1,2,3,4)
HDMI 2.1
:
No
CEC : Yes
HDCP 2.2 : Yes (HDMI 1,2,3,4)
USB 3.0
:
No
Variable Analog Audio Out : No
Wi-Fi Support : Yes (2.4 GHz, 5 GHz)
Audio Passthrough
ARC
:
Yes (HDMI 2)
eARC support
:
No
Dolby Atmos via TrueHD via eARC
:
No
DTS:X via DTS-HD MA via eARC
:
No
5.1 Dolby Digital via ARC
:
Yes
5.1 DTS via ARC
:
Yes
5.1 Dolby Digital via Optical
:
Yes
5.1 DTS via Optical
:
Yes
6.5

Sound Quality

The sound quality of the LG UK6570 is average. This TV doesn't produce any sub-bass or rumble, but has a decent amount of body and punch to its bass. It also produces clear and intelligible dialog. However, it does not get loud, so won't be suitable for large and crowded places. For a better sound, dedicated speakers or soundbars are recommended.

6.4 Frequency Response
Low-Frequency Extension
:
89.80 Hz
Std. Dev. @ 70
:
2.29 dB
Std. Dev. @ 80
:
3.29 dB
Std. Dev. @ Max
:
4.79 dB
Max
:
83.5 dB SPL
Dynamic Range Compression
:
3.93 dB

The frequency response is average-at-best. LFE (low-frequency extension) is at 90Hz, which is decent. This means this TV won't produce any thump or rumble in the sub-bass region, but does have a good amount of punch and body to its bass. The response above the LFE points is even and flat, which is great and important for producing clear and intelligible dialog. However, this TV doesn't get loud, which may be a deal breaker if it's going to be used in large and crowded environments.

6.7 Distortion
Weighted THD @ 80
:
0.326
Weighted THD @ Max
:
1.148
IMD @ 80
:
2.27 %
IMD @ Max
:
6.52 %

The distortion performance is decent. The overall amount of THD produced at 80dB is within decent limits. Also, there is not a big rise in THD under maximum load, which is good. However, this TV doesn't get very loud, so producing low THD at its maximum volume isn't that impressive.

7.8

Smart Features

Smart OS : WebOS
Version : 4.1

The LG UK6570PUB has good smart features. The WebOS interface is easy to navigate, but some people may find it convoluted. The content store has an excellent selection of apps, and there are built-in apps and media players that cover most of the basics. The included remote is somewhat simple, and it requires line-of-sight with the TV, but it can be replaced with the LG Magic remote.

8.5 Interface
Ease of Use