Film, also called a movie, motion picture, cinematography or photoplay is a series of still images that when shown on a screen create an illusion of motion images (due to the phi phenomenon).This optical illusion causes the audience to perceive continuous motion between separate objects viewed rapidly in succession. The process of filmmaking is both an art and an industry. A film is created by photographing actual scenes with a motion picture camera; by photographing drawings or miniature models using traditional animation techniques; by means of CGI and computer animation; or by a combination of some or all of these techniques and other visual effects.The word "cinema", short for cinematography, is often used to refer to the industry of films and filmmaking or to the art of filmmaking itself. The contemporary definition of cinema is the art of simulating experiences to communicate ideas, stories, perceptions, feelings, beauty or atmosphere by the means of recorded or programmed moving images along with other sensory stimulations.Films were originally recorded onto plastic film through a photochemical process and then shown through a movie projector onto a large screen. Contemporary films are now fully digital through the entire process of production, distribution, and exhibition from start to finish, while films recorded in a photochemical form traditionally included an analogous optical soundtrack, which is a graphic recording of the spoken words, music and other sounds that accompany the images. It runs along a portion of the film exclusively reserved for it and is not projected.