Question: what is the difference between 4k uhd and 4k ultra hd?
Answer: What is the difference between 4K and Ultra HD? ... In its correct usage, true 4K refers to a resolution of 4096 x 2160, which was first introduced in digital cinemas. UHD refers to a resolution of 3840 x 2160, which is the resolution you actually get on the TVs you take home.