what is the difference between 4k ultra and 4k uhd?
The simplest way of defining the difference between 4K and UHD is this: 4K is a professional production and cinema standard, while UHD is a consumer display and broadcast standard. To discover how they became so confused, let's look at the history of the two terms. ... UHD quadruples that resolution to 3,840 by 2,160.