This is wild: when you watch HDR video on a proper Mac, or recent iPhones, the whites are brighter than the brightest part of the screen. Apple calls it EDR, and it could become a standard for displays in the future.
How to Make Your iPhone Screen Brighter Than MAX or Darker Than MIN!
HDR, or High Dynamic Range, is when a TV or computer screen displays a greater range of dark to light, with blacker blacks and whiter whites, and a wider range of colors. When you watch HDR movies, you get to see this extended range.
That’s all well and good, but what if you’re viewing a thumbnail of an HDR clip on a non-HDR display? That’s where EDR comes in.
"It's one thing to view HDR video on an HDR TV, where the entire image just looks brighter and richer. It's another thing to see that kind of footage presented in the familiar context of a computer screen full of folder icons and file names," writes visual effects artist Stu Maschwitz on his prolost industry blog. "It's like walking through an art gallery and stumbling upon a painting with its own backlight."