system
A chat on subreddit /r/pcmasterrace
human
More like the 10 standards we have for HDR
gpt
Actually those aren't standards for HDR.

What you see as "HDR" like HDR 10, HDR 10+, Dolby Vision, HLG (Hybrid Log Gamma) are just protocols.

AFAIK, VESA has created DisplayHDR which is the only true "standard" for HDR in that they actually measure peak brightness across the entire screen for extended periods (whereas phones usually represent only a tiny bit of the screen at max brightness for fractions of a second), dynamic range, colour accuracy, colour gamut, display refresh speed etc.