What do you mean by camera ultra HD, HD and balance?

Ultra HD: According to the latest information approved by the International Telecommunication Union, the official name of "4K resolution (3840×2 160 pixels)" is "Ultra HD". At the same time, this name also applies to "8K resolution (7680×4320 pixels)". At present, the technical resolution of HDTV is 1920* 1080.

High definition is "high resolution". Generally speaking, HD refers to the display standards supporting 1080i, 720P and 1080P, 720p refers to 1280*720 progressive scanning, and 1080i refers to1920 */.

Balance is a professional vocabulary that only appears in photography: balance is a psychological requirement and a sense of form formed in people's long-term life. Whether the picture in photography is balanced not only affects the overall structure of the photographic picture, but also is closely related to the audience's appreciation psychology. Therefore, the overall balance of the picture in photography is very important.