HDR settings uniformity is much needed

[Scott_Arm]

Windows has a relatively new feature called auto color management (acm) that should correctly display SDR content on an HDR display. Otherwise your SDR content will be oversaturated because it’ll be expanded to your displays wide gamut.

I have a wide gamut display and I made a thread on this forum about how I use novideo_srgb to clamp the gamut and also calibrate full screen games.

 

[trinibwoy]

Yeah that’s what I read so I’m really confused as to what’s happening.

 

[Potato Head]

Great investigative work by Tim at Monitors Unboxed on QD-OLED panel dimming in HDR. He even taught the guys at TFTCentral a thing or two!

https://tftcentral.co.uk/articles/updated-exploring-msis-firmware-update-for-the-peak-1000-hdr-mode-for-many-of-their-qd-oled-monitors

Geez, a monitor that changed brightness when scrolling a window of text would drive me insane.

OLED has always been on my wishlist, but not if they behave like this.

 

[Scott_Arm]

Yeah that’s what I read so I’m really confused as to what’s happening.

Windows always displayed things incorrectly on wide gamut displays unless an application was colour management. Acm is supposed to fix that but you need to check if it’s working or enabled because I don’t know if it works with all monitors.

 

[Cyan]

Windows always displayed things incorrectly on wide gamut displays unless an application was colour management. Acm is supposed to fix that but you need to check if it’s working or enabled because I don’t know if it works with all monitors.

tried that utility you mentioned last week -I used the Unlimited profile-. It seemed to work fine, no more washed out colours nor instant odd changes when using SDR content from bright to darker and duller, etc, but after using it my monitor's behaviour changed, the max framerate it supported went from 165Hz to 120Hz, and oddly new possible framerates were added, like 75Hz and stuff like that. I reinstalled the GPU drivers performing a clean installation but to no avail, I had to reset the monitor's firmware to default values using CRU.

 

[Scott_Arm]

@Cyan novideo_srgb or acm? novideo_srgb should only work with Nvidia GPUs. There’s a different way to clamp colours in the AMD drivers. Don’t know about Intel.

 

[Cyan]

@Cyan novideo_srgb or acm? novideo_srgb should only work with Nvidia GPUs. There’s a different way to clamp colours in the AMD drivers. Don’t know about Intel.

tried this one.

GitHub - dylanraga/win11hdr-srgb-to-gamma2.2-icm: Transform Windows 11's virtual SDR-in-HDR curve from piecewise sRGB to Gamma 2.2

Transform Windows 11's virtual SDR-in-HDR curve from piecewise sRGB to Gamma 2.2 - GitHub - dylanraga/win11hdr-srgb-to-gamma2.2-icm: Transform Windows 11's virtual SDR-in-HDR curve from pi...

github.com

 

[Scott_Arm]

tried this one.

GitHub - dylanraga/win11hdr-srgb-to-gamma2.2-icm: Transform Windows 11's virtual SDR-in-HDR curve from piecewise sRGB to Gamma 2.2

Transform Windows 11's virtual SDR-in-HDR curve from piecewise sRGB to Gamma 2.2 - GitHub - dylanraga/win11hdr-srgb-to-gamma2.2-icm: Transform Windows 11's virtual SDR-in-HDR curve from pi...

github.com

Oh right. That’s another issue with windows hdr. That’s to fix a gamma issue with how windows handles hdr. Windows is a total mess.

 

[Malo]

HDR looks so good when it works though. I didn’t realize how flat SDR looks in comparison. I’m really questioning the need for super bright displays though. Even at 500 nits I find myself squinting at highlights. Can’t imagine why we need 1000 or god forbid 10000 nit monitors.

It's more about degree of coverage for brightness and color space. You can have a monitor with "HDR1000" that won't look as good or sustain brightness with more surface area than a VESA Display HDR400 monitor. As with many different bullet points on boxes throughout the decades, the maximum nits isn't everything.