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822 GLOSSARY OF TECHNICAL TERMS [J. S. M. P. E.
Cine. — A prefix used to refer to the motion picture art, or motion picture apparatus.
Cinephotomicrography. — Motion picture photography through a microscope.
Circle of confusion. — The spot of light of finite size which constitutes the optical image of a point. The circle of least confusion is the smallest circle of confusion obtainable with the best adjustment of focus.
Close-up. — A photograph in which the major subject occupies a large portion of the film frame.
Color screen. — (See Filter.)
Color temperature (of a light source). — The temperature (usually expressed in degrees K.) at which a true black body will match the color of the source of light.
Colorimetric purity. — The degree of freedom of a color from admixture with white.
Condenser (optical). — A lens or combination of lenses used to gather light from a source and converge (condense) it, as upon the aperture of a projector, or into an intense spot of light for use in a theater, etc.
Condenser (electrical). — A device consisting of two electrical conductors separated by a non-conducting medium, used for storing electrical energy.
Continuity. — A detailed form of scenario giving a complete description of each scene. (Same as Script.)
Contrast. — (a) The range of tones in a photographic negative or print expressed as the ratio of the extreme opacities or transparencies or as the difference between the extreme densities, (b) A property of any type of photographic material descriptive of its ability to differentiate between tones in the subject.
Cut-back. — A scene in a motion picture which reverts to a previous action.
Cut-in. — An incidental scene or subject, inserted in a motion picture, which breaks the continuity.
Cutting. — The selection and arrangement in the proper sequence of the various scenes in a motion picture.
Cycle. — A complete set of recurrent values of a periodic phenomenon.
Damping. — (See Alternating current, damped.) Causing a decay or decrement in the amplitude of any vibratory phenomenon.