what is 4k resolution

4K resolution refers to a horizontal display resolution of approximately 4,000 pixels. Specifically, it means that an image or video has about 4,000 horizontal pixels, which are the individual units that compose the picture. The term "4K" is generic and refers to any resolution with a horizontal pixel count of approximately 4,000. Several different 4K resolutions have been standardized by various organizations, but the most common one used in television and consumer media is 3840 × 2160 (4K UHD) . The movie projection industry uses 4096 × 2160 (DCI 4K) . 4K resolution is four times more detailed than 1080p.