Originally Posted by Nighthog
Here is some information from another PC user using a Samsung QLED I can share some tips and general user experience. Though I have a 2018 55" Q8DN.
I'm coming from the q7fn myself
[PC MODE], as you saw only supports Standard & Dynamic picture modes. You have WCG enabled. It uses the full natural gamut of the display. It's not SDR.
I don't, enabling it causes the entire gamut to cave to washed out colors, have yet to make sense of it.
You can't have it do SDR in PC MODE. It's basically a WCG DCI-P3 display used like that.
Currently operating in SDR 8 bit for the time being, which is equivalent to how I had it on the q7fn as well, this is per the tv info as well as calibration. I'm waiting on a new tool to arrive which supports over 1k nits and full BT 1886 support.
4:4:4 Chroma is only available in PC MODE.
Used in this mode RGB input is recommended for best picture. You do not have colour gamut & calibration settings available. Only a 2-point adjustment.
Correct I generate a profile for the Windows to utilize on the TV via LUT's/Profile, I use the 2 point to calibrate within spec, ( or service menu for back end adjustment when needed )
What I recommend you do is change input to [Game Console], do not use [PC input]!
You get all available picture modes, [standard, dynamic, natural & movie] both SDR & HDR.
You get full colour & calibration controls. [20-point & colour gamut] You can have [SDR/rec.709], [DCI-P3] etc and calibrate for it using the TV settings.
I recommend the use of output for YCbCr 4:4:4 for best detail/black level on your GPU. (though you lose some chroma detail the picture is overall better, TV processes the image better than with a RGB source in this mode)
Due to the bold I can't do that + PC mode also allows for better input lag overall when combined w/ Game mode ( though if that's changed someone can correct me, but this was based on tests done on the 2018 models ) Not to mention I sit about 3 1/2 feet away from my screen so the loss on chroma would be apparent in games and text. I initially did use non PC gaming support and that was one of the main things that bugged me on it due to the increase due to more processing of filters allowed. Though I won't knock it due to the improvements in processing power, so will give it another shot to test, but at least in PC mode I can get it to pick up additional resolutions intended via the driver, Honestly can't say much though till I see 4k 120hz in action, which should be any day now given teh 3000 series gets announced this month, along w/ the adapters since 1 company has stated production is done and they're available just can't find them in stores yet.
There is a difference on the TV on what black level it uses for different source signal. RGB & YCbCr have different ground levels. You need to use Shadow detail setting on your 2020 TV or Brightness on 2018/2019 set. I found it's a ~3 level difference. For example RGB can have 0 but to get the same level with YCbCr you need it 3 higher.
For example I found YCbCr 4:4:4 with brightness 0 is best. If I use RGB it has to be -3 or -2 to give similar detail on my Q8DN.
Your 2020 TV will have it labelled shadow detail.
Each display is diff I get that, and on my 2018 I had Gamut +1 (for 1886) and brightness -1 for deep darks in game mode. Here setting Brightness to 0 as u stated lowers the backlight completely and unacceptable since colors begin to wash out. I've been using -1 on shadow for now since -2 seems to produce crushed blacks at the given moment, and bumping shadow detail washes out blacks. A good LUT profile fixes this however.
[PC Mode] & [Game Console] have different gamma levels. Be aware.
The TV will engage some processing to enable the calibration controls which might be the cause for the difference.
[YCbCr 4:4:4]->[Game Console] -> [Movie] is what I use. More than happy. You get the better Local dimming.
I have local dimming disabled completely, while it can be interesting, it can definitely mess w/ you when zooming around multi lit areas. Again this is personal pref as it bothers me.
[Game Mode] engaged will need it's own settings but it's quite similar. You get only 2-point adjustment but you keep your SDR colour gamut & calibration available. HDR works also for those games that support it but you need a different calibration for that.
The Local dimming isn't as good but works to a extent. If input lag isn't critical use Movie mode rather than Game mode. ~10ms vs 30?
Correct, and I'd prefer the lower, since for higher refresh ( which is the intended purpose on my end ( once I get 120hz up and running )
I used a shared calibration profile someone did for their Q9FN on my Q8DN and in this workflow it's good. The profile is perfect for all other sources, I just made so it can be used with my PC for SDR desktop usage.
Glad to hear, especially since each panel can vary factory wise so sometimes it can make it look worse. I also recommend sharpness 9 over 10 since at 10 it sharpens the edges to a point it actually loses information, at 9 the TV's able to fully render everything nicely, and takes like 10 seconds to adjust to ( for PC users )
I'll upload my complete settings when I'm finished, so we can kinda compare across ( for those using it as the same to see how they fair ) it will be interesting to see.
Right now looking back on notes for Game mode, since this apparently has 6 options for it, as opposed to just 2 that the 2018 and 2017 models had, which is interesting.
ALSO (For anyone curious)
Great news, I was able to RE ENABLE the HDR+ MODE that was removed, its just disabled by default lol.