LG UK7700 TV REVIEW

Usage Ratings - Version 1.3
7.5
Mixed Usage
Value for price beaten by
: Vizio M7 Series Quantum 2019
6.3
Movies
8.0
TV Shows
7.8
Sports
8.2
Video Games
6.3
HDR Movies
7.6
HDR Gaming
8.3
PC Monitor
Type : LED
Sub-Type
:
IPS
Resolution : 4k

The LG UK7700 is a good 4k IPS TV for a wide range of usages. It has good gray uniformity so not much dirty screen effect is noticeable when watching sports or playing video games. It also has great reflection handling for a bright room and remains accurate when viewed at an angle. The low input lag and fast response time are also great for gamers, but unfortunately, the dark scene performance is bad as blacks appear gray and blotchy.

Test Results
Design 8.5
Picture Quality 7.1
Motion 7.1
Inputs 9.4
Sound Quality 6.5
Smart Features 8.2
Pros
  • Feels very responsive due to excellent input lag
  • Image remains accurate at an angle
Cons
  • Blacks are gray and blotchy in a dark room
  • Mediocre HDR support
  1. Update 2/28/2019: Converted to Test Bench 1.3. Learn more about our versioned test bench system here.

Check Price

8.5

Design

Curved : No

The design of the LG UK7700 is good. It has a nice metallic finish. The stand is wide and supports the TV well. It is a relatively thin TV that will not protrude much if wall-mounted but you might have a hard time reaching some of the inputs that are in the back and are facing outwards. The build quality is good and should not cause any issues.

Stand

The stand of the LG UK7700 is plastic and very wide. It provides good support to the TV and only little wobbling is noticeable.

The footprint of the 65" model is: 51.8" x 11.3"

Back
Wall Mount : VESA 300x300

The rear of the TV is plain. Some of the inputs face directly out the rear of the TV and these may be hard to reach if it is wall mounted.

There is no cable management.

Borders
Borders : 0.51" (1.3 cm)

The borders of the TV are thin and look nice. Even though they are plastic, they have a silver finish that makes them look more premium.

Thickness
Max Thickness : 2.52" (6.4 cm)

The LG 65UK7700 is not very thick. The widest part of the TV is at the base where the LEDs are hosted. As such, it will not stick out much if wall-mounted.

Temperature
Maximum Temperature
:
109 °F (43 °C)
Average Temperature
:
91 °F (33 °C)

This LG 65UK7700PUD get slightly warm at the bottom edge of the TV where the LEDs are hosted. Although it feels warm to the touch, it should not cause any issues.

7.5 Build Quality

The build quality of the LG UK7700 is good but has no visible gaps. It is almost entirely plastic and because of that, it does not look or feel premium.

7.1

Picture Quality

The LG UK7700 LED TV has a decent picture quality. It has low contrast ratio even for an IPS panel, poor local dimming and poor black uniformity so when viewed in a dark room it cannot deliver a great picture as dark scenes look a bit washed-out. In a bright room, as the TV cannot get very bright, it cannot fight glare but thankfully it is great at dealing with reflections. Gray uniformity is good although some dirty screen effect is noticeable in sports. The viewing angle results in a fairly accurate image when viewed at an angle which is okay for a wide room.

6.0 Contrast
Native Contrast
:
1028 : 1
Contrast with local dimming
:
1028 : 1

The native contrast on this LG UK7700 is ok. Dark scene blacks will look a little grayish in a dark room and local dimming does not help much to improve the situation.

1.5 Local Dimming
Local Dimming
:
Yes
Backlight
:
Edge

Poor local dimming performance on most scenes. It cannot make the blacks look deeper. Local dimming on the TV is implemented with a limited number of vertical zones since the TV is edge-lit. This has limitations in the effectiveness of local dimming. To compensate for that the algorithm is aggressive and dims the whole screen making the smaller highlights almost disappear. It is however less aggressive than the SJ8500. We recommend that you keep it on medium and if you think that the local dimming is not working to your liking, you can turn it off or simply set it to 'Low'.

6.6 SDR Peak Brightness
SDR Real Scene Peak Brightness
:
221 cd/m²
SDR Peak 2% Window
:
252 cd/m²
SDR Peak 10% Window
:
259 cd/m²
SDR Peak 25% Window
:
252 cd/m²
SDR Peak 50% Window
:
249 cd/m²
SDR Peak 100% Window
:
248 cd/m²
SDR Sustained 2% Window
:
251 cd/m²
SDR Sustained 10% Window
:
259 cd/m²
SDR Sustained 25% Window
:
252 cd/m²
SDR Sustained 50% Window
:
249 cd/m²
SDR Sustained 100% Window
:
248 cd/m²
SDR ABL
:
0.006

Decent peak brightness, good enough for dim rooms but not enough to allow the TV to overcome glare. The TV sustains similar brightness across a number of window sizes and this is great.

6.1 HDR Peak Brightness
HDR Real Scene Peak Brightness
:
278 cd/m²
HDR Peak 2% Window
:
454 cd/m²
HDR Peak 10% Window
:
452 cd/m²
HDR Peak 25% Window
:
327 cd/m²
HDR Peak 50% Window
:
288 cd/m²
HDR Peak 100% Window
:
288 cd/m²
HDR Sustained 2% Window
:
270 cd/m²
HDR Sustained 10% Window
:
285 cd/m²
HDR Sustained 25% Window
:
287 cd/m²
HDR Sustained 50% Window
:
288 cd/m²
HDR Sustained 100% Window
:
288 cd/m²
HDR ABL
:
0.004

The HDR peak brightness is mediocre. The TV boosts small highlights but the brightness is just not enough to display the creator's intention and take advantage of the HDR increased brightness range. A definite setback compared to last year's UJ7700.

7.5 Gray Uniformity
50% Std. Dev.
:
3.306 %
50% DSE
:
0.181 %
5% Std. Dev.
:
0.445 %
5% DSE
:
0.102 %

The LG UK7700 has a good gray uniformity. In the 50% gray test picture, it is slightly darker on the sides and especially at the corners. The image uniformity at the center is a little better and although one can still notice minor dirty screen effect, it will not bother you much when you use the TV for sports viewing.

In the 5% image the uniformity is very good with no noticeable clouding.

6.9 Viewing Angle
Color Washout
:
26 °
Color Shift
:
48 °
Brightness Loss
:
32 °
Black Level Raise
:
70 °
Gamma Shift
:
31 °

The LG 65UK7700 has a mediocre viewing angle. It is one of the worst IPS panels, but still better than almost all VA TVs. Blacks remain black, as you move away from the central angle but the colors shift and brightness washes out. Last year's UJ7700 had a very similar viewing angle.

5.0 Black Uniformity
Native Std. Dev.
:
2.080 %
Std. Dev. w/ L.D.
:
4.475 %

The black uniformity of the LG UK7700 is poor. Clouding is scattered all over the image and there are areas where the black looks more like deep gray. When the local dimming is enabled, there is a gray stripe in the center of the screen defined by the horizontal line of the test cross. This not only reveals the local dimming capabilities of the TV, but also is causing even more black uniformity issues. This is a very similar behavior to last year's UJ7700 model.

8.8 Reflections
Screen Finish
:
Semi-gloss
Total Reflections
:
3.0 %
Indirect Reflections
:
0.5 %

The TV is great at handling reflections. The semi-gloss finish diffuses reflections across the screen, reducing their intensity. This should is great as the TV can be placed both in average lit rooms and in bight ones.

6.0 Pre Calibration
White Balance dE
:
5.52
Color dE
:
3.62
Gamma
:
2.16
Color Temperature
:
6497 K
Picture Mode
:
Expert (Dark Room)
Color Temp Setting
:
Warm 2
Gamma Setting
:
2.2

The LG UK7700 has very good out of the box color accuracy. When the picture mode is set to Expert (Dark Room), the color dE is almost at 3, so a few people might notice slight imperfections and the white balance dE is well below 3 were people might notice some inaccuracy.

The gamma is at 2.09 making shadows look slightly darker, but again only a few people will notice. The color temperature is almost on target and just slightly off to the warm side.

9.0 Post Calibration
White Balance dE
:
0.15
Color dE
:
2.55
Gamma
:
2.19
Color Temperature
:
6513 K
White Balance Calibration
:
20 point
Color Calibration
:
Yes
Auto-Calibration Function
:
No

The post calibration color accuracy is excellent, even though it's not easy to achieve. The gamma was flattened to almost match the 2.2 target.

We were not able to completely correct the color dE even though we were able to reduce it. On the other hand, the white balance dE was almost zeroed. Finally, the color temperature stabilized more closely to the 6500K target due to the improved white balance.

You can see our recommended settings here.

8.0 480p Input

Upscaling of low resolution content such as DVDs is good.

8.0 720p Input

720p content including cable TV looks good. There are no obvious artifacts or softening of the image.

9.0 1080p Input

1080p content looks good. The image is crisp and detailed.

10 4k Input

Native 4k content is displayed well on the TV.

7.3 Color Gamut
Wide Color Gamut
:
No
DCI P3 xy
:
80.78 %
DCI P3 uv
:
86.18 %
Rec 2020 xy
:
58.71 %
Rec 2020 uv
:
64.53 %

The color gamut of this TV is decent, but it fails to pass the 67% mark of the Rec. 2020 uv color space coverage for us to classify it as having a wide color gamut.

In the Cinema HDR picture mode, when the TV is sent our normal 10,000 cd/m² HDR infoframe, its EOTF massively undershoots the target PQ curve, making HDR content appear far dimmer than intended. Fortunately when the TV is sent a 1,000 cd/m² HDR infoframe, its EOTF is much brighter, though still not great. This means that some content will be shown with a fairly accurate brightness, while other content will be shown far dimmer than intended. If you find HDR content too dim, setting Dynamic Tone Mapping to On and setting Dynamic Contrast to High brightens the EOTF somewhat, as shown here with the 10,000 cd/m² HDR infoframe. The Game picture mode unfortunately shows the same EOTF dimming as Cinema.

6.4 Color Volume
Normalized DCI P3 Coverage ITP
:
74.6 %
10,000 cd/m² DCI P3 Coverage ITP
:
34.6 %
Normalized Rec 2020 Coverage ITP
:
53.3 %
10,000 cd/m² Rec 2020 Coverage ITP
:
24.5 %

The color volume on this LG UK7700 is sub-par. This is mainly due to the limited color gamut, that does not allow the TV to display dark shades of colors as it fails to cover either color space well.

8.4 Gradient
Color Depth
:
10 Bit
Red (Std. Dev.)
:
0.085 dE
Green (Std. Dev.)
:
0.099 dE
Blue (Std. Dev.)
:
0.078 dE
Gray (Std. Dev.)
:
0.120 dE

The gradient on this TV is good. There is some small banding in almost all of gray, but only faint banding elsewhere else.

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 image retention on this TV and this is good news for those users who might use this TV as a monitor.

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
7.1

Motion

The LG UK7700 has okay motion handling. It has a great response time so only a short trail is visible with fast-moving content. The TV flickers the backlight in order to dim the brightness at 120Hz and this can be bothersome to some people. There is no BFI option and the motion interpolation that can be used to reduce stutter can sometimes create artifacts since it does not stop when motion becomes very fast as many higher-end TVs do. Finally, the TV can remove judder only from native content and not when the 24p is coming through a 60i or 60p signal.

8.4 Response Time
80% Response Time
:
6.1 ms
100% Response Time
:
12.8 ms

The response time is great and results in only a small trail following fast moving objects. It is an improvement over the UJ7700.

4.0 Flicker-Free
Flicker-Free
:
No
PWM Dimming Frequency
:
120 Hz

As with many 2018 models, the UK7700 uses PWM at 120Hz to dim the backlight. This causes duplications in situations of images with fast moving objects, that you can see in the blur box.

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

TheLG 65UK7700 does not have an optional BFI, but because the backlight flickers at 120Hz, it does help motion look more clear.

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

Motion interpolation on the UK7700 is decent. It is nearly perfect during slow-moving shots. When at the De-judder is set to max, the TV does not stop interpolating even during fast motion, so some artifacts are present. If you find that interpolation produces too many artifacts, we recommend you lower the value of De-Judder so that motion interpolation becomes less aggressive and produces less artifacts

7.3 Stutter
Frame Hold Time @ 24 fps
:
28.9 ms
Frame Hold Time @ 60 fps
:
3.9 ms

The LG UK7700 is decent at displaying content without stutter. In low fps content such as 24p movies, you will notice some stutter as the TV response time is quite fast. If you find that bothersome, you can enable motion interpolation to reduce it.

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 65UK7700 can play 24p content without judder, but only when played from a native 24p source like a Blu-ray player or from the native apps. To remove judder turn on Real Cinema.

When the 24fps content is coming through 60i or 60p then the TV is not able to remove it.

0 Variable Refresh Rate
Native Refresh Rate
:
60 Hz
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

This TV doesn't support variable refresh rate.

9.4

Inputs

The LG UK7700 has a very low input lag making it good for use as a PC monitor. Although the supported resolutions do not include 1440p or 1080p at 120hz, most other common input signals, including HDR, can be properly displayed so that along with the low input lag should please even the most demanding gamers.

9.8 Input Lag
1080p @ 60 Hz
:
12.8 ms
1080p @ 60 Hz Outside Game Mode
:
136.0 ms
1440p @ 60 Hz
:
N/A
4k @ 60 Hz
:
12.9 ms
4k @ 60 Hz + 10 bit HDR
:
14.0 ms
4k @ 60 Hz @ 4:4:4
:
11.6 ms
4k @ 60 Hz Outside Game Mode
:
134.6 ms
4k @ 60 Hz With Interpolation
:
134.6 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

Remarkable low input lag. When Game mode is activated, the TV bypasses all processing. This is among the best input lag we have tested up to date.

Chroma 4:4:4 is only shown properly in the PC input mode and unlike many other LG TVs, the Game picture mode is still required when in the PC input mode in order to have the lowest input lag.

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 most common resolutions are supported on the LG UK7700. However, 1440p is not supported, although 1080p @ 120Hz is accepted by the TV, it is not displayed properly as this is a 60Hz panel and drops every second frame.

4:4:4 Chroma is only properly displayed when the input icon is set to PC mode and the signal is RGB as YCbCr will not correctly display.

When in PC Mode with HDR enabled, the TV does not properly support 4:4:4 color and colors appear washed out.

In PC Mode, Sharpness at 0 means no added sharpness.

4k @ 60Hz @ 4:4:4 or 4:2:2 is only supported when HDMI Ultra HD Deep Color is enabled

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
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 of the LG UK770 is average. This TV has a decent amount of punch and body to its bass, but doesn't produce any thump or rumble as it lacks sub-bass. It is also capable of producing clear and intelligible dialogue, but gets only decently loud and may not be loud-enough for very large and noisy environments. For a better sound, soundbars or dedicated speakers are recommended.

6.4 Frequency Response
Low-Frequency Extension
:
80.00 Hz
Std. Dev. @ 70
:
3.42 dB
Std. Dev. @ 80
:
4.59 dB
Std. Dev. @ Max
:
6.30 dB
Max
:
86.3 dB SPL
Dynamic Range Compression
:
4.95 dB

The frequency response of the UK700 is average. LFE (low-frequency extension) is at 80Hz, which is decent. This means that this TV will have some punch to its bass, but won't be able to produce sub-bass, which is responsible for thump and rumble The response above the LFE point is quite good, which is important for producing intelligible dialogue. However, this TV gets only decently loud and produces some pumping and compression artifacts under heavy loads. Also, its room correction system (Magic Sound Tuning) wasn't able to remove the modes of our test room around 200Hz.

6.8 Distortion
Weighted THD @ 80
:
0.528
Weighted THD @ Max
:
0.755
IMD @ 80
:
3.10 %
IMD @ Max
:
4.87 %

The distortion performance of the UK7700 is about average. The overall amount of THD produced is not very high at 80dB SPL, and there is not jump in THD under maximum volume either. However, this TV doesn't get very loud.

8.2

Smart Features

Smart OS : WebOS
Version : 4.0

The LG UK7700 runs the latest version of WebOS, LG's smart operating system. It has a decent number of pre-installed apps, you can always visit the LG content store where you can choose from thousands of third-party apps. The LG content store is not as good as the Google Play Store found on Samsung or Sony TVs. The remote is the one that comes with all high-end 2018 LG models we have tested and is well built. The Smart features design works well but is not as sleek as the ones found on high-end Samsung or Sony TVs. The  Smart features come equipped with new voice control functions that are very powerful. They function properly and allow it to interface with a variety of other devices like Amazon Alexa or Google Home.

8.5 Interface
Ease of Use
:
Easy
Smoothness
:
Average
Time Taken to Select YouTube
:
2 s
Time Taken to Change Backlight
:
12 s
Advanced Options
:
Many

The webOS interface is similar to other 2018 LG models like the SK9500. It includes the improved search functionality and the menu is very responsive.

0 Ad-Free
Ads
:
Yes
Opt-out
:
No
Suggested Content in Home
:
Yes
Opt-out of Suggested Content