@Mike-Ralston said in 4K vs UHD:
4K is actually a 16:10 at 4096 x 2160
Actually, even DCI, that make that projection defitinition, doesn't have a single standard and DCI 4K (which is not 4K, it's DCI 4K) isn't a standard, but a list of standards. So even by the book DCI 4K doesn't necessarily match what you claim to be a requirement. So even if you believe that DCI has the right to own the term 4K, you don't result in a 4096 pixel standard.