What's the difference between HD 4k camera and ordinary camera?

This is a 4K camera with a 4K video recorder. 4K video refers to a video image with a resolution of 4096×2 160, so it is also called 2 160P, that is, it has 4000 pixels horizontally, which is the highest resolution video image at present, and its definition is four times that of high-definition video. Except for 4K, the HD part is the same as the HD camera.