Comment by iLemming
Honest and maybe stupid question. What does enabling HDR on Mac actually does? I have Samsung Odyssey, and turning it on for me only slightly dims the brightness of the display and rather feels uncomfortable to me personally, so I keep it off. What benefits (or drawbacks) should I expect when having it on? I spend most of my time in my terminal, my editor (GUI Emacs) and browser. I rarely have to edit photos or videos, do I still need it, I wonder.
update: turns out, for my specific case of the display model, it seems it's better to keep it off, otherwise the colors are not as vibrant.
I don't know if these are compelling. On a Mac I think they are somewhat
https://gregbenzphotography.com/hdr-gain-map-gallery/
Note: Pretty much all phones for the last 4-5 years take HDR images. Take a high contrast phone (sun in the background, something dark covering half the image). Then later, view in in your phone. At least on iPhone they have some "fade to bright" thing where they don't show the HDR instantly but they instead fade to HDR over 1 second or so. Once they the brightness up it will still be up for the next photo. If you get out of the photo app at some point it will reset and then the next time you look at a photos it will do the "fade to HDR" thing.
Note: that site seems to only work correctly in Chrome. In Safari, the images flicker between SDR and HDR in some semi-random way. Firefox, AFAIK, has not added any HDR support yet.
There's also this: https://threejs.org/examples/?q=hdr#webgpu_hdr
Should work on Chrome Mac/iOS, and Safari iOS. Broken on Safari MacOS.