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ASA COMMITTEE ON STANDARDS, Z22 275
Sprockets, this dimension has been changed to 0.943 inch (from 0.945 inch) to reduce film wear.
The Standard for Photographic Density Z22.27 was revised to take advantage of the more detailed standard developed for Still Photography Z38.2.5-1946.
Two new standards on camera and projector apertures were based on corresponding Z52 War Standards :
Z22. 59-1947 Photographing Aperture of 35-Millimeter Sound Motion Picture
Cameras Z22 . 58-1947 Picture-Projection Aperture of 35-Millimeter Sound Motion Picture
Projectors
Film-Nomenclature Standard Z22.56-1947 and 16-Millimeter BuzzTrack Test Film Z22.57-1947 were also taken from Z52 War Standards without change. The new standard Z22. 55-1947, 35-Millimeter Sound Motion Picture Release Prints, is essentially a statement of current American practice in the preparation of 35-millimeter motion picture film in 2000-foot lengths for distribution to theaters.
Shortly after the Screen-Size Standard Z22.29-1946 was adopted, the objection was raised that it was not clear as to whether or not the dimensions included the entire screen or only the useful area. Consequently the Chairman asked the Motion Picture Research Council to make a proposal for revision which would clarify this point.
The following nine proposed standards on 35-millimeter test films were prepared by the Motion Picture Research Council and submitted by letter ballot to members of the Z22 Committee :
Z22.60 Theater Sound Test Film for 35-Millimeter Motion Picture SoundReproducing Systems
Z22.61 Service-Type Sound-Focusing Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22.62 Laboratory-Type Sound-Focusing Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22 . 63 Service-Type Multifrequency Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22.64 Laboratory-Type Multifrequency Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22.65 Service-Type Scanning-Beam Uniformity Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22.66 Laboratory-Type Scanning-Beam Uniformity Test Film for 35-Millimeter Motion Picture Sound Reproducers
Z22 . 67 1000-Cycle Balancing Test Film for 35-Millimeter Motioru Picture Sound Reproducers