What's the difference?
HDR vs UHD
UHD (Ultra High Definition) resolution and HDR (High Dynamic Range) technology work together to improve picture quality—they simply accomplish this in different ways. UHD resolution (also referred to as 4K) is a measurement of pixel quantity (more pixels create higher resolutions). HDR is a technology that allows your TV to express a wider range of dark and light color tones. Together, UHD (4K) and HDR create a more accurate and realistic picture. When you see these terms as you look for your new TV, remember that they are not competing standards so you don’t need to choose one or the other.
Remember 4 things when you choose HDR TV
In order to get one of the best HDR experiences, the following should be considered:
How well bright content can be expressed, how well dark black content can be expressed and how accurately different colors can be expressed.
These are the key factors that determine the quality of a TV set with HDR.