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The KS1870 perforation, or KS perforation with a pitch of 0.1870", is the modern standard for release prints as well as for 135 still camera film. 65/70 mm, the other "professional" standard, was created many years after KS perforations had been recommended for negative as well as positive applications, and was adopted for positive applications.
35 mm film is a film gauge used in filmmaking, and the film standard. [1] In motion pictures that record on film, 35 mm is the most commonly used gauge. The name of the gauge is not a direct measurement, and refers to the nominal width of the 35 mm format photographic film, which consists of strips 1.377 ± 0.001 inches (34.976 ± 0.025 mm) wide.
The Academy ratio of 1.375:1 (abbreviated as 1.37:1) is an aspect ratio of a frame of 35 mm film when used with 4-perf pulldown. [ 1 ] [ 2 ] It was standardized by the Academy of Motion Picture Arts and Sciences as the standard film aspect ratio in 1932, although similar-sized ratios were used as early as 1928.
The majority of 35 mm film systems, cameras, telecine equipment, optical printers, or projectors, are configured to accommodate the 4-perf system; each frame of 35 mm is 4 perforations long. 4-perf was (and remains) the traditional system, and the majority of projectors are based on 4-perf, because 4 perforations is the amount needed per frame vertically in order to have enough negative space ...
pin wheel perforation spherical Kinetoscope cylinder: Wm. Dickson & T. Edison: 1889 or 1890 Monkeyshines, No. 1: strip rolled around a cylinder unperforated spherical spherical Kinesigraph: Wordsworth Donisthorpe: 1890 or 1891 view of Trafalgar Square: 70 mm 1.00 unperforated spherical Friese-Greene: Wm. Friese-Greene: 1891 King's Road, Chelsea ...
The Mohammed family sat up talking late into the night before their journey north to the ruins of their Gaza home, a trudge across a desolate landscape that hundreds of thousands of Palestinians ...
The 35 mm 8 perforation Technirama horizontal camera film. Note the circle has been stretched vertically by a factor of 1.5. Technirama is a screen process that has been used by some film production houses as an alternative to CinemaScope. It was first used in 1957 but fell into disuse in the mid-1960s.
Techniscope employs standard 35 mm camera films, which are suitable for 2-perf (Techniscope), 3-perf, conventional 4-perf (spherical or CinemaScope), and even 6-perf and 8-perf (VistaVision), as all of those processes listed employ the same negative and intermediate films, and positive print films intended for direct projection (although 2-, 3- and 8-perfs are not distribution formats).