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I am confused about why I can see this screenshot since I am not on a wide gamut monitor. Is firefox doing a weird conversion or the screenshotting tool? My (p

by zawerf 7y ago

I am confused about why I can see this screenshot since I am not on a wide gamut monitor. Is firefox doing a weird conversion or the screenshotting tool? My (probably flawed) understanding was that wide colors means there's more than 8 bits. So stuff that would be say rgb(254.5, 0, 0) would now be distinguishable from rgb(255, 0, 0)? If you screenshotted it back to 8 bit you would just lose the extra bits and I expected to still see a red square? Or is that not how it works?

deleted 7y ago
[deleted]
TwoBit 7y ago
Yes flawed. If you have a bitmap that's using a wide color space (e. g. P3/OLED) and it has a green (0,1,0) pixel then that's referring to a color than an LCD display cannot possibly show. 0,1,0 on an LCD is a less saturated green. The OS changes color values to try to make things look as much as expected as possible, and that results in color clipping. A screenshot saves images as sRGB and so no remapping is done upon display.