For TVs, the generally accepted resolution of 4K is 3840 x 2160 pixels, or exactly four times the pixel count of 1080p, or Full HD. This increased pixel density offers sharper images, more detail ...
gives an indication of a TV’s picture clarity,” says Dylan Squire, purchasing director at Richer Sounds. “4K is the next step up from Full HD, which itself improved upon the original HD TV ...