- Joined August 2021
4K resolution is not standardized description of a number of physical pixels. It’s an approximation of the number of pixels wide something is (as opposed to the previous convention of how many pixels tall as in 480p, 720p, 1080p, etc.) So you have a variety starting from 3840 pixels up to at least 5120 pixels on “ultrawide 4K” displays
There are two standards for 4K screen resolution, “DCI 4K” and “UHD 4K”.