Ultra High Definition, or
UHD for short, is the next step up from what's called
full HD, the official name for the display resolution of 1,920 by 1,080.
UHD quadruples that resolution to 3,840 by 2,160. ... A diagram illustrating the relative image size of 4K vs. 1080p -- except that 4K should be labelled
UHD, or 2160p.
read more >>