LG C6H OLED  TV Review

The LG C6H has excellent brightness in HDR. Small specular highlights are extremely bright, allowing it to bring out small details in bright scenes extremely well. Large scenes are considerably dimmer due to the TV's strong automatic brightness limiter (ABL), but they're still brighter than most OLED TVs on the market.

The posted results are with the TV in its most accurate picture mode with 'Dynamic Tone Mapping' and 'Expression Enhancer' disabled. Below are the results with DTM turned on, which significantly increases brightness in most real scenes but isn't as accurate.

• Hallway Lights: 1,919 cd/m²
• Yellow Skyscraper: 1,315 cd/m²
• Landscape Pool: 438 cd/m²

Results with 'Dynamic Tone Mapping' enabled and 'Expression Enhancer' set to 'Brightness'.

• Hallway Lights: 1,921 cd/m²
• Yellow Skyscraper: 1,375 cd/m²
• Landscape Pool: 455 cd/m²

The TV is slightly brighter when you switch to the 'Game Optimizer' mode.

The posted results are with the TV in 'Game Optimizer' mode with 'Dynamic Tone Mapping' and 'Expression Enhancer' disabled. Below are the results with DTM turned on, which significantly increases the brightness of most real scenes, but it's not as accurate.

• Hallway Lights: 1,988 cd/m²
• Yellow Skyscraper: 1,643 cd/m²
• Landscape Pool: 899 cd/m²

Results with 'Dynamic Tone Mapping' enabled and 'Expression Enhancer' set to 'Brightness'.

• Hallway Lights: 1,867 cd/m²
• Yellow Skyscraper: 1,712 cd/m²
• Landscape Pool: 1,024 cd/m²

The LG C6H OLED has excellent peak brightness in SDR. It's bright enough to overcome glare in a moderately-lit room. The TV's automatic brightness limiter significantly reduces the peak brightness of the TV when more of the TV is bright at once, like when watching sports. It can deliver higher instantaneous peaks, reaching over 400 nits for a split second.

The TV has a nearly infinite contrast ratio, giving it perfect contrast. Due to OLED's self-lit pixels, it displays bright highlights next to perfect inky blacks, making it very impressive in a dark room.

Since OLEDs don't use lighting zones and instead have individual pixels that can be lit up to their maximum brightness next to pixels that are turned off, there's no blooming when bright elements are surrounded by deep blacks.

This TV is an OLED without a backlight, so its self-lit pixels give it the same performance as a TV with perfect local dimming and no zone transitions. We still film the zone transition video so you can see how it compares to an option with local dimming.

There's no difference in dark scene behavior when the TV is set in Game Optimizer.

Because OLEDs can turn off individual pixels, the TV has perfect black uniformity with no blooming or halo effect around bright objects.

The LG C6H OLED has fantastic color volume thanks to LG's tandem OLED panel. Colors are extremely bright and vibrant, with much wider coverage of the BT.2020 color space than the LG C6 OLED 2026.

The HDR color volume on this TV is excellent. Colors are brighter and more vibrant in the BT.2020 color space than the LG C6 OLED 2026, but it still relies heavily on its white subpixel, so saturated colors are a bit washed out in bright scenes. Saturated colors in shadow details are displayed well.

The LG C6H OLED has great accuracy in SDR before calibration. The white balance and color accuracy are both excellent out of the box, but the color temperature is a bit on the cool side, giving it a slightly blue tint. Gamma tracking is excellent, but it's a bit wavy, so some shades are slightly crushed.

This TV has fantastic accuracy after calibration, and it's easy to calibrate. Color accuracy didn't change much after calibration, but the white balance, gamma tracking, and color temperature are much better.

See our full calibration settings.

The accuracy in HDR before calibration is just okay. The white balance is noticeably off in midtones, but pretty good in bright and dark shades. Color accuracy is mediocre; reds are noticeably undersaturated and there are significant luminance mapping errors across the board. The color temperature is a bit cool.

This TV has good accuracy in HDR after calibration, but the calibration controls are a bit finicky, making it difficult to calibrate. The color accuracy barely changed after calibration, but the white balance is a lot better, and the color temperature is nearly perfect.

The PQ EOTF tracking on this TV is excellent. It tracks most content well, and shadow details and midtones are displayed well. There's a gradual roll off near the TV's peak brightness for all content, and it's slightly slower for content mastered at 4,000 nits. This helps preserve fine details in bright scenes but limits how bright specular details get.

The LG C6H does a fantastic job smoothing out low-quality content. Macro blocking and pixelization are significantly reduced, and there's very little loss of fine details in the scene.

The TV does a fantastic job upscaling DVDs, standard definition streams, and other low-resolution content. Oddly, the 'Super Resolution' feature doesn't seem to do anything.

Thanks to its new 13-bit processing pipelining, the LG C6H OLED has superb gradient handling in HDR. There's almost no noticeable banding in any shade. Unlike the LG C5 OLED and LG G5 OLED, there's no noticeable diagonal dithering with HDR10 content.

Unfortunately, there are a few issues when watching content in Dolby Vision. With this content, there are noticeable lines similar to the diagonal dithering issue with some content, and it can look a bit like a scan line at times. There's also a slight halo effect in low APL scenes.

You can see a few examples of the difference between HDR10 and Dolby Vision below.

• Green Knight - Dolby Vision | HDR
• Green Knight - Dolby Vision | HDR
• Green Knight - Dolby Vision | HDR
• Green Knight - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR
• Gradient - Dolby Vision | HDR

This TV has incredibly low input lag, ensuring a very smooth and responsive gaming experience.

4:3 @ 60Hz:

• 640x480: 27.1 ms
• 800x600: 33.4 ms
• 1024x768: 26.5 ms

If you don't want to use the 'Game Optimizer' Picture Mode, you can instead simply toggle the 'Game Optimizer' setting while staying in 'Filmmaker Mode', and the input lag is nearly the same.

Filmmaker Mode with Game Optimizer Enabled and the Input Label Set to 'PC':

• 60Hz:  22.8 ms
• 120Hz: 13.9 ms
• 144Hz: 4.6 ms
• 165Hz: 4.3 ms

The TV supports all common resolutions up to 4k @ 165Hz, and it supports chroma 4:4:4, which helps with text clarity from a PC.

The TV supports FreeSync and HDMI Forum VRR and is certified as G-SYNC compatible, ensuring a nearly tear-free gaming experience from any VRR-enabled source. It works well across the TV's entire refresh rate range and supports sources with low framerate compensation (LFC), which ensures your games remain nearly tear-free even when your frame rate drops very low.

The TV's CAD at its maximum refresh rate of 165Hz is fantastic. Pixels transition to their target RGB level almost instantly, so fast motion is very sharp. Unfortunately, there's some minor overshoot in shadow details.

The TV's CAD at 120Hz is outstanding. It displays fast-moving objects without noticeable blur, so fast motion is clear. There's some noticeable overshoot in near black scenes, though.

The TV's CAD at 60Hz is fantastic. Most transitions from one RGB level to another are nearly instantaneous, but transitions from black are a bit slow.

The LG C6H is fully compatible with everything the PS5 offers, like 1440p @ 120Hz and 4k @ 120Hz, as well as HDMI Forum VRR. It also supports Auto Low Latency Mode, so you don't have to worry about switching to Game Optimizer to get the lowest input lag.

This TV is fully compatible with everything the Xbox Series X|S offers, including 1440p @ 120Hz, 4k @ 120Hz, HDMI Forum VRR, FreeSync Premium Pro, and Dolby Vision gaming. It also supports Auto Low Latency Mode, so you don't have to worry about manually switching to Game Optimizer to get the lowest input lag.

Unfortunately, there's noticeable stutter in slow panning shots due to the TV's nearly instantaneous response time.

Adding motion interpolation to increase the frame rate of 24p content to 30 fps does a decent job at reducing stutter. There's still noticeable stutter, but the feature is very consistent, ensuring a smooth frame pacing.

This TV removes 24p and 25p judder from native apps and external devices that send a 24Hz or 25Hz signal, like an Apple TV with the 'Match Frame Rate' feature enabled. The TV also properly removes judder from 24p content that's being sent to it in either 60p or 60i. However, it doesn't remove 25p judder from 60p signals, and frames are held for an inconsistent duration, which causes motion to look jittery.

To remove judder on this TV, the Real Cinema setting must be enabled. Unfortunately, this setting is locked when OLED Motion Pro (BFI) is enabled, so movies and TV shows aren't judder-free when BFI is enabled, since the BFI feature only flickers at 60Hz.

Enabling Quick Media Switching causes judder on this TV when watching 24p content via a 60p signal.

There's no micro judder with most sources. It drops occasional frames when watching 24p content sent via a 60p signal, unless you enable Quick Media Switching, but doing so causes normal judder.

The LG C6H has a nearly instantaneous response time, resulting in incredibly clear motion with almost no blur behind fast-moving objects when watching content. Due to the sample-and-hold nature of OLED technology, there's still some persistence blur at 60Hz, but it's not very noticeable when watching movies or shows.

There are no noticeable transition artifacts like intermediate colors or soft edges on this TV.

This TV doesn't have a traditional backlight and doesn't use pulse-width modulation (PWM) to dim each pixel, but it's not completely flicker-free. There's a slight dip in brightness that corresponds to the TV's refresh rate. This is very different from the PWM flicker on TVs with LED backlights and occurs on every OLED we've tested.

This TV has an optional black frame insertion (BFI) feature that reduces the appearance of persistence blur at 60Hz. Unfortunately, it can only insert black frames at a 60Hz refresh rate, and there's still some blur present.

The LG C6H has mediocre direct reflection handling. Bright lights are slightly reduced in intensity, but they can still be distracting. If you need an LG OLED that does a much better job of reducing the intensity of direct light sources, you can step up to the LG G6 OLED.

Ambient light has barely any impact on black levels.

The screen coating on the LG C6H is a bit different from the smaller LG C6 OLED 2026 models, and there's slightly more reflected light. Diffraction artifacts are a bit more noticeable, but overall, it still looks great.

This TV has great color saturation in a bright room. Ambient light has no noticeable impact on perceived color volume.

The LG C6H has a great viewing angle. There's a very slight green shift as you move to the side, but it's barely noticeable. It's a great choice for a wide seating arrangement, as the image doesn't lose brightness and blacks remain deep when viewed at an angle.

The gray uniformity on this TV is just okay. There's not much dirty screen effect in the center, but the sides are noticeably darker. There are also noticeable vertical lines in near-black scenes.

The LG C6H uses a tandem OLED panel, similar to the LG G5 OLED. This updated panel has much better color separation than previous WOLED panels, but it still relies on a white subpixel.

Due to its subpixel layout, it has minor issues with displaying text on Windows since ClearType isn't well optimized to non-RGB subpixel layouts, but LG has restructured the subpixels so it looks a bit better than previous generations.

You can see an additional subpixel photo showing other subpixels, as all four are never lit at the same time.

The LG C6H supports the full 48Gbps bandwidth of HDMI 2.1 on all four HDMI ports. This allows you to take full advantage of multiple high-bandwidth devices, such as if you own both current-gen consoles and a high-end gaming PC.

This TV passes through all Dolby Digital options. However, it doesn't support any DTS audio formats commonly used on physical media.

This TV supports Dolby Vision, but not the newer Dolby Vision 2. It's unclear if LG has any plans to eventually add support for the newer format or not.

The LG C6H has a sleek and modern design, and LG hasn't changed the design much in recent years. There's no difference in design between this model and the LG C6 OLED 2026.

The included stand holds the TV well. It only lifts it about 2.9 inches above the table, but this is high enough that most soundbars fit underneath without blocking the screen.

Footprint of the 77-inch stand: 20.5" x 10.5".

The back of the TV is nearly identical to the LG C5 OLED, with a stone-like finish on the panel and a metal box in the center for the TV's electronics. The inputs are on the far left when facing the screen, and they're tricky to access if the TV is wall-mounted. There are channels in the base and a clip to help with cable management.

The LG C6H OLED has fantastic build quality. It's a solid TV with no significant issues. Our unit is slightly warped, but it's possible that this occurred during shipping and isn't likely a widespread issue.

The LG C6H OLED TV ships at launch with the 2026 version of LG's proprietary smart interface, webOS. LG promises at least four years of webOS updates on their TVs, and you get updated versions of the operating system once a year.

There are two settings in the 'Home Settings' menu, namely the 'Home Promotion' and 'Content Recommendation' settings. These settings remove the top banner ads and suggested content from the home screen. This gives your home screen a clean look, but there's no way to remove ads from the apps page.

• Remote (with 2x AAA batteries)
• User manuals
• Cable management clip

This TV shipped with firmware version 43.02.66, but 43.02.67 was released while we were testing it. All results have been rechecked with the new firmware.

This TV has a mediocre frequency response. It doesn't get very loud, and the sound profile isn't very well balanced, so high bass is a bit overpowering and dialogue is muted.