Motion picture photography (1927)

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GLOSSARY Supers — See Extras. Super Speed — Motion pictures taken at several times normal speed ; also called slow motion because when shown at normal speed the subject seems to move at very slow speed. System, F — A system of marking lens diaphragms in terms of the focal length. System, U — Uniform System, a system of marking diaphragm stops in numbers corresponding to their relative speed. Tanks — Large containers in which films are developed in quantity. Tank System — Developing in a tank according to a table calculated for time and temperature. Tape Line — Used by motion picture cameramen to measure the distance from lens to object so that the lens may be set to the distance scale without having to focus for sharpness. Telephoto Lens — A lens which gives a large image of a distant object. Test 1. A short piece of film developed to ascertain whether the exposure and focus are correct. 2. A short picture made of an actor to "test" his action and appearance on the screen. Test Chart — See Chart. Threading — Placing film in a camera or projector ready to operate. Thin — A negative or positive in which the silver image is thin or transparent. Timing — Determining the printing light value necessary to make a good positive. Tinted Film — Film that has been printed upon a colored celluloid base. Titles — The printed captions in motion picture film. Toned Film — Film in which the image has been changed to another color by a chemical solution. Topical Film — News film. Trick Work — Making films showing impossible actions or occurrences. Triple Exposure — A film made by exposing the same film in the camera three times. Tripod — The three legged camera support. 421