For a 2K resolution camera, it’ll have approximately 2,000 pixels in an image or video. A 4K resolution camera – you guessed ...
Full HD or FHD, has a resolution of 1920 x 1080 pixels, roughly twice the resolution of 720p but just a quarter of 4K.
HD, has a resolution of 1280 x 720 pixels and is mostly found in smaller TV screens.