A 4K movie is a film that is shown using 4K technology from Sony; the term refers to the number of pixels that a movie is shown with. Most digital projectors used in theaters show movies using a 2K spectrum, the "K" symbolizing about 1,000 pixels. Sony's system projects 4,000 pixels and gives new depth and clarity to a movie going experience, according to AMC Theatres.
4K technology is also available for home entertainment systems and a variety of companies are making Ultra HD television systems. The units require faster computers and internet speeds to deliver the quality that they are capable of when showing movies or streaming content at home, according to PC magazine.