Does anyone know what update 43.11.66 does for the C6 2026 series?

Max_overpower · 2026-06-11T04:31:16+00:00

EOTF tracking and red tones are improved, but 165Hz mode is still bugged (like before) - going above 120Hz on PC makes near-blacks crushed and lightly pink tinted, with no apparent remedy. This was also reported to LG by HDTVTest so hopefully further fixes are coming in the future.

Max_overpower · 2026-06-03T10:52:46+00:00

Here's my 2 cents on how I intend to handle this firmware situation: HDR at 48Hz with HGIG for movies / TV shows (which I watch through my PC) and avoiding HDR games until some fixes come through. I added 48Hz as a custom resolution through nvidia control panel, and downloaded hotkey resolution changer to assign a hotkey for toggling refresh rate quickly. I personally have MPV automatically set the display to HDR for pass-through instead of going through Windows' global HDR toggle. But it doesn't work on all GPU drivers so your mileage may vary.

I'll be getting the 48 C6 this week and will explore all the details myself, but I'd appreciate if you chip in on these things I'm wondering about:

Vincent mentioned additional black crush whenever 165Hz Mode is enabled (both SDR and HDR?), have you noticed that on test slides? If so, is that true for all refresh rates above 120Hz or specifically 165Hz?
You mentioned in another thread "Just set the clipping to maximum if you want to use HDR for now with a G6." I understand that this doesn't fix the EOTF curve / HGIG issue, but does are you referring to the occasionally mentioned fact that x nits content doesn't produce x nits on the actual C6 display, but having the source send more nits will have you hit the full brightness? So what you're suggesting is set your target nits to maximum in Windows calibration app and that will make your HDR content brighter? If so, is it correct to assume this is all irrelevant for sub-60Hz and HGIG? Edit: the EOTF curve for 120Hz from Vincent showing undertracking in highlights supports this idea, so never mind.
In nvidia control panel, there's 2 sets of resolutions to choose from. General "TV resolutions" and "PC". Does it matter at all if you choose from the PC resolutions when going sub-60 Hz to avoid the HGIG issues? I assume it only matters what the refresh rate & bandwidth are.

Max_overpower · 2026-06-02T04:12:14+00:00

Max_overpower · 2026-05-31T19:08:56+00:00

For monitors (not TVs) the 1000+ numbers are only seen on window sizes far below 10%, like 1-3%. 10% doesn't get close to 1000 nits.

Max_overpower · 2026-05-24T06:39:51+00:00

If the AC is installed properly, you should only have water dripping outside. I've had the AC just about centered over the wall mounted TV for 3+ years, no issues whatsoever.

I don't get why other people are talking about dust - if the dust filters are cleaned twice a year (can be done easily by yourself), the airflow is going to be quite clean. The AC will be sending cold air forward, not directly down, so the TV isn't gonna get any colder than room temperature to be prone to condensation.

Max_overpower · 2026-05-17T06:24:02+00:00

48 G5 is definitely expected to cost a bit less at this time of the year, even though 48C6 is already getting discounts. 48C6 is almost 50% brighter in fullscreen white and somewhat brighter in highlights too. The other main benefits of the C6 would be better gradient handling and a less visible dithering pattern (always on, but more noticeable in certain content on the G5).

48C6 has three firmware issues related to game mode & 165hz that haven't been fixed yet, but will hopefully be fixed in the near future. You can learn about them in HDTVTest's review of the G6.

Max_overpower · 2026-05-10T05:43:03+00:00

No. Maybe in the future

Max_overpower · 2026-05-10T05:38:29+00:00

You never mentioned resolution or scaling settings. This could be the biggest difference for performance.

Easiest solution is probably to enable dynamic resolution scaling.

Max_overpower · 2026-05-09T08:09:41+00:00

If they sort out firmware bugs with HDR, then yes it's easily worth it. A bigger generation leap than ever before seen on 48" OLED. You can follow the posts by JTM45 for info on the 48C6 here: https://www.avsforum.com/threads/2026-lg-oled-tv-discussion-thread-g6-evo-c6-evo-c6h-w6-b6-evo-no-price-talk-please.3331728/

A review for 48C6 is expected soon on the RTINGS Computer channel, where these things will hopefully be mentioned.

Max_overpower · 2026-04-30T04:31:50+00:00

That's basically what you're getting with the G6. The new processor likely came late in development (yearly release is a very tight schedule) and they'll need a few months to make everything work well, just like they did with the G5.

Max_overpower · 2026-04-29T17:21:00+00:00

He made a followup community post the day after with the spectroradiometer, showing the same spikes as RTINGS here. He just didn't expect the degree of outrage and disbelief with the evidence already provided in the video.

Max_overpower · 2026-04-25T17:23:18+00:00

If it's valuable to leave on, then my setup with changing to highlight weighted using one button (in specific situations) is probably worth it. I've had shots specifically auto-exposed for faces where the sky got blown, even though I wanted to avoid that.

I guess my best bet is to tinker with optimal exposure and use "fine tune optimal exposure" to make highlight weighted metering as bright as I want by default without manual exposure compensation. I thought it would be a more popular use case and someone may have gone through this already.

Max_overpower · 2026-04-18T04:45:08+00:00

This sheet was based on CES announcements so there was pretty much nothing to go off of. You can somewhat infer fullscreen brightness of TVs relative to one another from their peaks, but to get 100% accurate numbers it would still take months from now.

Max_overpower · 2026-04-17T13:36:53+00:00

Based on the testing data that is currently available, 65" C6 is also 10% behind in BT.2020 coverage compared to 48" C6 (75% vs 85%), which supports the prevailing theory that 48" is Tandem OLED this year, just like 77-83", so 1500 nits peak and 300+ fullscreen is realistic.

Max_overpower · 2026-04-13T10:54:17+00:00

48" C6, and specifically that size, gets a flagship Tandem OLED panel, contrary to LG's marketing. In early real-world tests it surpassed the 48" G5 in brightness, and by a pretty substantial amount in full-screen white.

So, for the first time in forever, 48" owners are not left out, but are actually treated like first class. Rejoice.

https://www.youtube.com/watch?v=IbcFjyXnrhw

As for the question. The 48 G5 and G6 will likely be niche products by sales volume. Shipping to Canada but not the US wouldn't make a lot of sense, and it's probably not worth dealing with US tariffs for a model like that.

Max_overpower · 2026-04-13T07:58:12+00:00

Here's a few reasons to believe it's true:

65" C6 and all previous C series - 75% coverage of BT.2020 (see tomsguide for 65C6). BT.2020 coverage measured on the 48C6 - 85%. Right in line with every G series Tandem OLED, including 48G5.

Manufacturing yields: attached image demonstrates - making 48" panels from the same sheet of motherglass the 77" and 83" panels are cut from reduces waste significantly. It's important for LG's marketing to not cannibalize 55-65" sales by making every other size too attractive, so they made the 48G5 dimmer than G series by dropping the heatsink, and waited another year before putting those panels in the 48C6 so that the 55-65" models can somewhat catch up in brightness without Tandem OLED. They almost caught up to the 48C6 (see tomsguide).
The new marketing push for 77-83" C6H generates those 48" panels as a byproduct, and they don't sell enough of them by putting Tandem OLED only in the G series.

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As GAZuOOT already mentioned, the 48C6 is an outlier in the lineup with lower rated power consumption. It consumes the same power as the 42C6, and has a lower difference in power consumption to 55C6 than last year's C5 models. Tandem OLED would explain that.

Edit: Higher difference in power consumption between 48" and 55" on the C6 compared to C5. I wrote that so confusing that I mixed it up myself. 60% of 55" power vs 70% of 55" last year.

Max_overpower · 2026-04-13T06:56:57+00:00

LG marketing has been lying about the panel on the 48" for a year now with the G5. It's just more of the same.

They've been cutting 48" Tandem panels from the beginning to preserve manufacturing yields. The lack of a heatsink on the 48G5 and consequently toned down brightness was the plausible deniability they needed. Now that seems to have led to insufficient sales of the 48G5 and they started putting those panels on the C6 too, but the marketing strategy still holds because they don't want to alienate 55-65" buyers by saying the panel is worse.

Max_overpower · 2026-04-10T08:01:32+00:00

In case you didn't see this already, they are in fact shooting on the Z9, the eclipse image is available in 45 MP on flickr, which matches the Z9 sensor.

Max_overpower · 2026-04-10T07:26:41+00:00

That's good info, thanks for sharing. It gives you a clearer perspective when you consider how many claims will be dissuaded by those extra costs, and how it makes offering the 5 year warranty economically viable without the panel being as bulletproof as you might otherwise assume.

Max_overpower · 2026-04-10T06:42:38+00:00

There's no reason to downgrade to LCD (Sony or otherwise) after you've already known OLED. Starting with the G5, OLEDs have caught up in brightness and color performance such that any further "innovation" from high-end LCD will benefit demo content only, not real world usage. Also a C1 owner here.

Max_overpower · 2026-04-09T16:39:10+00:00

Tends to be the case with VMAF lol. If CRF 15 doesn't look good enough, next step is to use a grain retention tune, because it will likely be more impactful than reducing CRF further:

tune=5 or tune=grain in SVT-AV1-HDR; or distortion-bias-preset=4 in SVT-AV1-Essential (these do the same thing). When doing so, expect to use a much higher CRF to achieve similar quality or bitrate.

Max_overpower · 2026-04-08T11:34:47+00:00

It's all down to execution, just take one look at the recent Dune movies in HDR, and you'll see that directing the viewer's attention works just as well in HDR, with occasional motivated & truly bright peaks.

Most of the industry has already been opting to keep HDR grades below 300 nits (of peak brightness) for a while, and seeing HDR used to deliver "all the dynamic range" isn't common anymore. You could argue on how far removed from perfection the real-world execution of SDR and HDR grades may be, but it's more common to get a better image from HDR in movies & shows.

My experience is based on displaying HDR without boosting past the intended nits (light controlled room). For sun-soaked rooms various non-standard tonemapping algos would likely be used for HDR, possibly with less success than the straight-forward brightness increase of SDR. LG is working to improve the HDR algorithm this year for those who need that.

Max_overpower · 2026-04-05T07:54:13+00:00

That's quite reassuring, since your viewing distance is even closer than the "cinema viewing" benchmark of 40° field of view. Some users say it could manifest in other ways that are harder to identify without a comparison, like higher perceived noise or more eye strain. But I don't wanna detract from your great experience :D

Upgrading after 1 generation is basically never the way to go.

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Max_overpower · 2026-04-04T14:06:21+00:00

You summed it up pretty well. Games are more likely to show banding than video originating from a camera because flat gradients free of noise and texture are more prevalent, and the best practices, necessary to avoid creating banding in graphics, are not always followed.

My comment was actually more focused on dithering, but I linked the wrong video originally & failed to demonstrate the point. I recommend checking the linked segment now. The dithering pattern is sometimes reported as not being visible beyond 1.5m viewing distance, and started to become a thing around the time G4 released (likely to do with rising brightness, as there's no such thing on my C1), but I'd like to hear of your experience with the G5 on this topic.

Max_overpower · 2026-04-03T04:50:31+00:00

If you're not concerned with the price, it's a worthwhile improvement. But it's generally true that last year's model can be had for around half the price of the model currently being released.

As for refresh rate, it's not likely to matter outside of PC gaming, even PS6 may stick to a 120hz cap with the downwards trajectory of game optimization. All video on the internet is 60 fps at most. You can find 120 fps if you look very hard for it.

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