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LG C6 OLED TV Review

Tested using Methodology v1.0
Reviewed Oct 14, 2016 at 08:53 am
LG C6 OLED Picture
Mixed Usage
Value for price beaten by
: Not at the latest test bench
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
This TV was replaced by the LG C7 OLED
Resolution 4k
Refresh Rate 120 Hz

The LG C6 is a 4k OLED TV with excellent picture quality. The dark scene performance can't be beat, and the picture remains accurate even when viewed at a wide angle. Motion handling is excellent, with no motion blur following moving objects. As with other OLED TVs it's not perfect though as the screen can't get very bright to deal with glare and it suffers from temporary image retention after displaying static images.

Our Verdict

8.6 Mixed Usage

Excellent all-round performance. Perfect blacks results in infinite contrast ratio. Picture quality is excellent. Motion blur is non-existent. Picture remains accurate when viewed at an angle. Input lag is slightly higher than ideal. Some temporary image retention after static images.

  • Picture remains accurate when viewed at an angle
  • Great blacks
  • Excellent motion handling
  • Automatic brightness limiter (ABL) causes brightness to fluctuate depending on content
  • Displaying static images results in temporary image retention
9.4 Movies

Terrific for watching movies in a dark room. Picture quality and dark scene performance are excellent due to perfect blacks.

8.4 TV Shows

Excellent for TV shows in a bright room. Picture quality is unbeatable, and looks great from any angle. Unfortunately the whole screen can't get bright to deal with glare. WebOS smart platform works well.

8.3 Sports

Excels for watching sports. Picture quality is great and remains accurate at an angle. Negligible motion blur which is great. The uniformity is great, and results in almost no dirty screen effect.

8.4 Video Games

Great for gamers. Picture quality can't be beaten, and motion performance is excellent. Unfortunately the input lag is only slightly better than average, so may be an issue for the most hardcore gamers. Some temporary image retention may be visible after static content.

8.9 HDR Movies

Exceptional HDR performance for movies. Supports HDR10 and Dolby Vision. Perfect blacks results in excellent dark scene performance. Highlights can get quite bright, and supports a wide color gamut for vivid colors.

8.4 HDR Gaming

HDR picture quality is exceptional, with support for wide color gamut. Unfortunately highlights can't get as bright as some other high end TVs and high HDR input lag may be an issue for some people.

7.8 PC Monitor

Great choice for PC monitor. Picture remains accurate when viewed at an angle. Supports chroma subsampling and a wide range of resolutions for clear text. Motion handling is excellent. Unfortunately there is some temporary image retention.

  • 8.6 Mixed Usage
  • 9.4 Movies
  • 8.4 TV Shows
  • 8.3 Sports
  • 8.4 Video Games
  • 8.9 HDR Movies
  • 8.4 HDR Gaming
  • 7.8 PC Monitor

Test Results

Curved Yes

The design is almost exactly the same as the LG B6, but with a curved screen. It looks great, and stands out in any room. The clear plastic stand and the thinness of the screen are nice touches to the otherwise minimal look. Unlike the higher model E6, the speakers are built into the body of the TV.


The stand looks the same as the B6, and is made of transparent plastic. It has a small footprint but feels stable.

Footprint of the 55" TV stand: 11.3" x 27.0"

Wall Mount VESA 400x200

The rear of the TV looks almost the same as the B6. It has a brushed metallic finish, and provides a wide VESA mount for good support.

Borders 0.39" (1.0 cm)

The borders are very thin and look good. They feature a metallic edge, and a small black border around the screen.

Max Thickness 2.72" (6.9 cm)

The appears slightly thicker due to the curve. It is still a very thin TV, and looks good from an angle.

Maximum Temperature
37 °C
Average Temperature
32 °C

Since OLEDs are self-emissive, the heat is produced throughout the screen with a few hot spots where electronic components are located.

Picture Quality
Picture Quality
Native Contrast
Inf : 1

The OLED panel has a perfect native contrast ratio. Adjacent pixels can be turned off completely, leading to perfect blacks.

Picture Quality
Local Dimming
Local Dimming

The video is for reference only, since there is no need for a local dimming feature on OLED TVs.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
284 cd/m2
SDR Peak 2% Window
405 cd/m2
SDR Peak 10% Window
407 cd/m2
SDR Peak 25% Window
407 cd/m2
SDR Peak 50% Window
224 cd/m2
SDR Peak 100% Window
128 cd/m2
SDR Sustained 2% Window
405 cd/m2
SDR Sustained 10% Window
407 cd/m2
SDR Sustained 25% Window
407 cd/m2
SDR Sustained 50% Window
224 cd/m2
SDR Sustained 100% Window
128 cd/m2

The LG C6 OLED TV have an average SDR peak brightness and is on par with the LG E6. The ABL (Automatic Brightness Limiter) also affect the brightness of highlights bigger than 25%, making anything beyond that point darker than the smaller highlight.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
662 cd/m2
HDR Peak 2% Window
650 cd/m2
HDR Peak 10% Window
652 cd/m2
HDR Peak 25% Window
416 cd/m2
HDR Peak 50% Window
222 cd/m2
HDR Peak 100% Window
126 cd/m2
HDR Sustained 2% Window
650 cd/m2
HDR Sustained 10% Window
652 cd/m2
HDR Sustained 25% Window
416 cd/m2
HDR Sustained 50% Window
222 cd/m2
HDR Sustained 100% Window
126 cd/m2

Like with the LG E6P, the C6P is much better than 2015 OLED TVs, but unfortunately ABL (Automatic Brightness Limiter) is still present on the C6 and it limits the maximum brightness allowed on a full white screen. This is why, when you look at the results, the bigger the white surface gets, the dimmer it is. This may be distracting as the brightness changes depending on the scene.

Like the other LG OLED TVs, the screen brightness of a static image tends to diminish after some time. This might just be a screen protection or an energy saving feature. Once again, it is only when a static image is left on screen for a long time and should not have any impact on normal video content.

Picture Quality
Gray Uniformity
50% Std. Dev.
1.590 %
50% DSE
0.134 %
5% Std. Dev.
0.548 %
5% DSE
0.1 %

The gray uniformity of the C6 is very good, and better than any LCD TV. Dirty screen effect is not really an issue but still it is not perfect. On our test picture, you can notice some large vertical bands that are warmer than the rest of the screen.

After playing static material, temporary image retention is still an issue on this TV.

Picture Quality
Viewing Angle
LCD Type
Color Shift
41 °
68 °
Black Level
75 °

When viewed at an angle, the picture remains clear and the contrast very high. The colors become slightly less accurate, but as with other OLED displays this is a great result for those with wide seating.

Picture Quality
Black Uniformity
Native Std. Dev.
0.268 %

With a completely dark image, the pixels are turned off and emit no light whatsoever. This results in a perfect black uniformity without any blooming.

Picture Quality
Color Depth
10 Bit

The LG C6 OLED TV is able to display a 10 bit gradient very efficiently without any major banding or color shade issues. Some little imperfections can be seen here and there in the darker shades of color, but this is not really a problem and should not be visible when watching normal content.

Picture Quality
Pre Calibration
White Balance dE
Color dE

Prior to calibration the picture is quite accurate. The white balance is a little bit off at high IREs but this isn't really an issue. For most people a calibration isn't necessary.

Picture Quality
Post Calibration
White Balance dE
Color dE

The white balance calibration is performed with the inbuilt 2 and 20 point system. It works well to finely adjust the white balance.

The colors space calibration is a bit less responsive than the white balance one, but it is still possible to bring down the Color dE a bit more.

You can see our recommended settings here.

Picture Quality
480p Input

Upscaling of low quality content such as DVDs is good. Some artifacts can be seen along the edges of straight lines.

Picture Quality
720p Input

720p content such as blurays look clear. Details are preserved well.

Picture Quality
1080p Input

Upscaling of 1080p content is good. Small details can be seen clearly.

Picture Quality
4k Input

High quality content at the native resolution of 4k looks good. Image is crisp and clear. Note that a blue tint is slightly noticeable, but this is exaggerated by the camera.

Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
96.37 %
DCI P3 uv
96.25 %
Rec 2020 xy
70.45 %
Rec 2020 uv
72.86 %

The LG C6P has a wide color gamut, which can cover almost all of the P3 color space. This is about the same as the LG B6 and E6. Setting the color gamut to 'Wide' provides the most colors, 'Normal' is suitable for SDR content and 'Extended' is somewhere in between.

Picture Quality
Color Volume
Normalized DCI P3 Coverage
87.513 %
10,000 cd/m² DCI P3 Coverage
59.480 %
Normalized Rec 2020 Coverage
64.652 %
10,000 cd/m² Rec 2020 Coverage
43.560 %

Just like the other 2016 OLED TVs, the C6 has a large color volume. It is able to cover almost all of the P3 color volume and produce saturated colors even at low luminance.

Picture Quality
Image Retention
IR after 0 min recovery
2.656 %
IR after 2 min recovery
0.497 %
IR after 4 min recovery
0.313 %
IR after 6 min recovery
0.255 %
IR after 8 min recovery
0.108 %
IR after 10 min recovery
0.031 %

The LG C6 present image retention, like all the other OLED TVs. The image retention is a bit less intense than on LG LED TVs like the UH8500, but it lasts much longer. The brighter the static image is, more noticeable is going to be the retention. You can clearly see on the left side, where the white background was, it is now much darker than on the rest of the picture. The image retention can be pretty annoying for people that play a lot of video games or may use this TV as a PC monitor, since the static image will get retain for a bit more time than any LED TV. But once again, note that we did not notice any permanent burn-in on this OLED TV.

Picture Quality
0.4 %
Screen Finish

Reflections are dealt with very well. Like the other LG OLEDs of this year, the C6 has a special screen finish which works very well to cut down on the intensity of reflections. Due to the curve, direct reflections appear stretched.

Picture Quality
3D Type
2D to 3D

The C6P supports passive 3D and it is very good. There are not any major problems or any crosstalk visible when viewed from the front or the side. Note that the passive 3D results in half the number of lines of horizontal resolution.

Picture Quality

Motion Blur
Response Time
0.1 ms
1.6 ms

The response time is excellent, and results in negligible motion blur. This can be seen by the lack of trail following the logo. Some people prefer a flickering backlight, but this is not possible on the C6.

Image Flicker
PWM Dimming Frequency
0 Hz
BFI Frequency
0 Hz
BFI In Game Mode

The C6 uses the 'Sample and Hold' method to display an image. There are no options to enable flickering and so moving images may not appear as clear as other TVs which can flicker.

24p Playback
Judder-free 24p
Judder-free 24p via 60p
Judder-free 24p via 60i

Movies played from a Blu-ray player or built-in streaming apps appear smooth. Some judder may be noticed when watching movies over a cable box or home theater PC. Most people don't notice judder so this is not an issue.

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

The C6P is able to interpolate 30 fps or 60 fps content up to the native refresh rate of 120 Hz. To do this and enable the soap opera effect, set 'Trumotion' to 'User'. For a 30fps source increase 'De-Judder' and for a 60fps source increase 'De-Blur'. Note that this may introduce visible artifacts.

Input Lag
1080p @ 60Hz
34.1 ms
1080p With Interpolation
118.4 ms
1080p @ 60Hz Outside Game Mode
50.9 ms
1080p @ 60Hz @ 4:4:4
34.1 ms
4k @ 60Hz
34.1 ms
4k @ 60Hz @ 4:4:4
34.1 ms
4k @ 60Hz + HDR
34.1 ms
4k @ 60Hz @ 4:4:4 + 8 bit HDR

Input lag is better than average, and should be fine for most people. When the TV detects a HDR signal it switches to a HDR picture mode, which has fairly high input lag. For the best result with SDR content, change the picture mode to 'Game'. The input lag performance is the same as the E6, and slightly different to the B6. A video of the input lag differences can be seen here.

Update 11/08/2016: Some owners have started a petition to LG to address these issues. This can be found here.

Update 12/02/2016: With the newest firmware update (04.30.19) there has been the addition of a HDR gaming mode. In this mode the HDR input lag is lower, and should be fine for HDR gaming. Note that although the TV accepts a 4k @ 60Hz @ 4:4:4 + HDR signal, it can't accurately display the chroma subsampling in any HDR mode, even with the 'PC' icon selected. The HDR chroma subsampling looks the same as the B6, visible here .

Update 01/24/2017: The input lag has been updated for the newest firmware (04.30.95). The results are almost identical.

Supported Resolutions
1080p @ 60Hz @ 4:4:4
1080p @ 120Hz
4k @ 30Hz @ 4:4:4
4k @ 60Hz
4k @ 60Hz @ 4:4:4

Although this TV has a 120Hz panel, like other LG TVs it can't accept a 120Hz signal. To activate chroma subsampling, change the input icon to 'PC'. This allows for clear text on all backgrounds. For higher bandwidth signals such as 4k @ 60Hz @ 4:4:4, activate 'HDMI ULTRA HD Deep Color' on the HDMI port you are using in the 'General' settings.

Side Inputs

Rear Inputs

Total Inputs
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 0
Analog Audio Out RCA 0
Component In 1 (incl. adapter, shared)
Composite In 1 (incl. adapter, shared)
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0

Inputs Specifications
Dolby Vision
5.1 Passthrough ARC Dolby Digital
5.1 Passthrough ARC DTS
5.1 Passthrough Optical Dolby Digital
5.1 Passthrough Optical DTS
HDMI 2.0 Full Bandwidth Yes
ARC Yes (HDMI 2)
USB 3 Yes (1)
HDCP 2.2 Yes
Variable Analog Audio Out No

Sound Quality
Sound Quality
Frequency Response
Std. Dev. @ 70
2.72 dB SPL
Std. Dev. @ 80
2.52 dB SPL
Std. Dev. @ Max
5.06 dB SPL
88.8 dB SPL
Low-end Cutoff
89.80 Hz

Good performance. Frequency response is good at lower volumes. At higher volumes though, pumping and compression will be present. Additionally, low-end cutoff and maximum loudness are decent, for a TV.

Sound Quality
Total Harmonic Distortion
Distortion @ 70
Distortion @ 80
Distortion @ Max

Poor harmonic distortion performance. The overall amount of harmonic distortion at 75dB and 85dB are decent. However, at maximum volume, there is significant rise in distortion, especially above 1KHz. Aliasing was also audible with our test signal under maximum load.

Smart Features
Smart Features

Provides access to the 'LG Content Store' for a wide variety of apps. The most popular apps are included with the TV, such as Netflix and Amazon Video.

Smart Features
Smart OS WebOS 3.0

As with the other 2016 LG TVs, the C6P has the newest version of the WebOS smart platform. It is extremely stable and smooth, and works very well. The smart remote with included pointer allows for very fast navigation, and all of the menus and features are very easy to use. The interface is intuitive which is great. The TV comes with popular apps such as Netflix, Hulu and Amazon Video and provides access to the LG Content Store for a wide range of other apps. It is possible to play photos or videos from a USB drive plugged into the side of the TV.

Smart Features

Smart Features
TV Controls

The controls are located under the front of the TV. They provide very basic functionality but are easy to access, even if wall mounted. Note that we took the stand off the TV to take this photo.

Smart Features
Remote Smart

Includes the same smart remote as other high-end LG TVs such as the B6 and UH8500. Works well to browse WebOS with the pointer.

Smart Features
In The Box

  • Manual
  • Cable management strap
  • Batteries
  • Remote
  • Composite adapter
  • Component adapter
  • 2 x 3D glasses

Smart Features
Power Consumption 107 W
Power Consumption (Max) 171 W
Firmware 04.30.15

Differences Between Sizes and Variants

We tested the 55" (OLED55C6P). For the most part, we expect our review to be valid for the 65" (OLED65C6P).

If someone comes across a different type of panel or if their LG OLED 55C6P doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.

Size Model
55" OLED55C6P
65" OLED65C6P

Compared to other TVs

Comparison picture

Top left: Samsung KS8000 (UN55KS8000). Bottom left: LG B6 (OLED55B6P). Middle: LG C6 (OLED55C6P). Top right: Vizio P Series 2016 (P65-C1). Bottom right: LG UH8500 (55UH8500).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

Although the LG OLEDs are priced above the competition, they offer superior picture quality especially in darker scenes. The 2016 models all offer similar performance, which makes the C6 a great choice as one of the more affordable models. Keep this in mind when viewing our recommendations below.



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