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LG UF6800 TV Review

Tested using Methodology v1.0
Reviewed Oct 02, 2015 at 12:00 am
LG UF6800 Picture
Test Methodology v1.0
6.6
Mixed Usage
Value for price beaten by
: Not at the latest test bench
6.1
Movies
7.0
TV Shows
7.0
Sports
6.9
Video Games
5.9
HDR Movies
4.2
HDR Gaming
6.6
PC Monitor
Type LED
Resolution "4k"
Refresh Rate 60 Hz

The LG UF6800 UHD TV uses a less accurate 4k pixel structure known as RGBW. While it does have the correct number of pixels, it is missing some colored sub-pixels. Most people won't see the difference, though. Apart from this issue, it is an average LG LED TV.

Our Verdict

6.6 Mixed Usage

For most people, the fact that the LG UF6800 is using the less accurate 4k panel structure RGBW won't be a big deal. It is hard to tell the difference when watching normal content, even when sitting close. The bigger issues are the average-high input lag (for gaming), the poor contrast (for movies in a dark room) and the significant amount of reflection (in a bright room). At leas, it is able to maintain good color saturation off-axis.

See our Mixed Usage recommendations
  • 6.6 Mixed Usage
  • 6.1 Movies
  • 7.0 TV Shows
  • 7.0 Sports
  • 6.9 Video Games
  • 5.9 HDR Movies
  • 4.2 HDR Gaming
  • 6.6 PC Monitor
Pros
  • Good color accuracy when viewed from the side.
Cons
  • Uses the less accurate RGBW 4k structure. It does have the correct number of pixels, but some are missing color sub-pixels. This is not really noticeable, though, under normal circumstances.
  • Poor contrast ratio.
  • A lot of reflection.

Check Price

Test Results

Design
8.5
Design
Style
Curved No

The LG UF6800 LED TV looks like most other LG TVs of 2015. It has a wide stand, which could be a limitation if you have a small table.

Design
Stand

55" Stand Dimensions: 37" by 9".

Design
Borders
Borders 0.63" (1.6 cm)

Design
Thickness
Max Thickness 1.38" (3.5 cm)

Picture Quality
5.4
Picture Quality
Contrast
Native Contrast
712 : 1

The LG UF6800 has an IPS panel, like most other LG TVs. The contrast ratio is low, and in line with most other IPS TVs.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Direct

5.4
Picture Quality
SDR Peak Brightness
SDR Peak 2% Window
178 cd/m2
SDR Peak 50% Window
178 cd/m2

6.8
Picture Quality
Gray Uniformity
50% Std. Dev.
3.862 %
50% DSE
0.204 %

The gray uniformity is average. The edges are darker, and you can see a few horizontal whiter bands on the screen, but nothing outrageous.

6.6
Picture Quality
Viewing Angle
LCD Type
IPS
Color Shift
26 °
Brightness
39 °
Black Level
75 °

The best thing about this TV is its color accuracy at an angle, due to its IPS panel. Note that while the colors remain fine, the blacks don't (especially at a vertical angle).

Update 01/06/2017: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results from 2016 TVs.

7.2
Picture Quality
Black Uniformity
Native Std. Dev.
1.994 %

For an IPS TV, the blacks are more uniform than average, but every small defect is amplified, due to the poor blacks.

7.9
Picture Quality
Pre Calibration
White Balance dE
3.70
Color dE
3.9474
Gamma
2.29

9.7
Picture Quality
Post Calibration
White Balance dE
0.49
Color dE
0.7421
Gamma
2.2

8.0
Picture Quality
480p Input

DVDs looks great on this TV.

8.0
Picture Quality
720p Input

Cable TV and other high quality streaming video looks also good.

9.0
Picture Quality
1080p Input

Blu-rays looks very sharp once upscaled.

8.0
Picture Quality
4k Input

There is a slight loss of detail on very sharp text on native 4k content. This isn't an issue for movies, but it is noticeable when the TV is being used as a PC monitor. More details can be found here.

6.6
Picture Quality
Color Gamut
Wide Color Gamut
No
DCI P3 xy
73.23 %
DCI P3 uv
81.18 %
Rec 2020 xy
51.84 %
Rec 2020 uv
57.58 %

6.5
Picture Quality
Reflections
Reflection
1.9 %
Screen Finish
Semi-gloss

Direct reflections have a rainbow around them.
The luminosity is very limited. Also, when exposed to a lot of light, the screen has a yellow tint.

0
Picture Quality
3D
3D
No
3D Type
No

Picture Quality
Pixels

Motion
7.5
Motion
Motion Blur
Response Time
19.9 ms
Overshoot
0 ms

The motion blur is average. It shouldn't be an issue for sports, but it is not ideal for gaming.

Note: Due to the very aggressive PWM even at 100% backlight, our response time measurement is less accurate on this TV.

2.8
Motion
Image Flicker
PWM Dimming Frequency
120 Hz
BFI
No
BFI Frequency
120 Hz
BFI In Game Mode
No

7.1
Motion
24p Playback
Judder-free 24p
Yes
Judder-free 24p via 60p
No
Judder-free 24p via 60i
No

It supports a 24p input signal without issues. However, if it is sent over 60p or 60i, it can't reliably do the reverse 3:2 pulldown. It is a 60Hz TV, but it also has the optional soap opera effect, which you can turn on via 'TruMotion'. That feature won't look as smooth as on a 120Hz TV, though.

5.0
Motion
Motion Interpolation
Motion Interpolation (30 fps)
Yes
Motion Interpolation (60 fps)
No

Inputs
5.7
Inputs
Input Lag
1080p @ 60Hz
60.0 ms
1080p With Interpolation
125.3 ms
1080p @ 60Hz Outside Game Mode
63.1 ms
1080p @ 60Hz @ 4:4:4
60.0 ms
4k @ 60Hz + HDR
N/A
4k @ 60Hz @ 4:4:4 + 8 bit HDR
N/A

The input lag is average-high, and could cause some issues for some gamers. The good news is that, as long as you have 'TruMotion' off, it doesn't matter which mode you are in to get that input lag.

8.0
Inputs
Supported Resolutions
1080p @ 60Hz @ 4:4:4
Yes
1080p @ 120Hz
No
4k @ 30Hz @ 4:4:4
Yes
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
Yes

It doesn't support gaming at 120 fps. It does display chroma 4:4:4 at 4k and 60Hz if you turn on 'HDMI Ultra Color' and label the input as PC. However, the text still won't be 100% clear because it is not a 'full' 4k TV. More details here

Inputs
Side Inputs

Inputs
Rear Inputs

Inputs
Total Inputs
HDMI 3
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 0
SD/SDHC 0

Inputs
Inputs Specifications
HDR10
No
Dolby Vision
No
5.1 Passthrough ARC Dolby Digital
Yes
5.1 Passthrough ARC DTS
Yes
5.1 Passthrough Optical Dolby Digital
Yes
5.1 Passthrough Optical DTS
Yes
HDMI 2.0 Full Bandwidth Yes
ARC Yes (HDMI 2)
USB 3 No
HDCP 2.2 Yes
CEC Yes
MHL No
Variable Analog Audio Out No

Sound Quality
5.4
Sound Quality
Frequency Response
Std. Dev. @ 70
6.79 dB SPL
Std. Dev. @ 80
7.13 dB SPL
Std. Dev. @ Max
8.59 dB SPL
Max
85.9 dB SPL
Low-end Cutoff
89 Hz

Decent low-end for a TV, but the frequency response and loudness are poor. Pumping may also be present under heavy load.

7.1
Sound Quality
Total Harmonic Distortion
Distortion @ 70
0.025
Distortion @ 80
0.021
Distortion @ Max
0.023

Good and even distortion results across all volumes, but the TV doesn't get loud.

Smart Features
9.0
Smart Features
Interface
Smart OS WebOS

This LG is a smart TV, and it comes with the latest WebOS, which is great. It only has a very basic remote, though, so it is not as easy to navigate as on the other LG TVs. It also has a more limited number of inputs.

You can read our overview of LG's WebOS here.

0
Smart Features
Ads
Ad-free
No
Opt-out
No

Smart Features
Remote
Remote Smart

Smart Features
Misc
Power Consumption 51 W
Power Consumption (Max) 66 W
Firmware 04.20.08

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