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The ASA scale is a linear scale, that is, a film denoted as having a film speed of 200 ASA is twice as fast as a film with 100 ASA. The ASA standard underwent a major revision in 1960 with ASA PH2.5-1960, when the method to determine film speed was refined and previously applied safety factors against under-exposure were abandoned, effectively ...
The amount of silver in the film stock was reduced. [6] [7] Tri-X also exists as a reversal film for the 16 mm and Super-8 cine film formats. The speed for tungsten lighting (3200 K) is ISO 160 and for daylight ISO 200 when processed as reversal. It can also be processed as a negative at a small loss of speed while the grain will be slightly ...
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.
A cartridge of Kodak 35 mm (135) film for cameras. A film format is a technical definition of a set of standard characteristics regarding image capture on photographic film for still images or film stock for filmmaking. It can also apply to projected film, either slides or movies. The primary characteristic of a film format is its size and shape.
Silent film has no standard speed; many amateur formats have several common speeds, but no standard. Negative lenses indicates whether spherical (normal) or anamorphic lenses are used on the original camera negative, and if anamorphic lenses, what anamorphic power is used. Projection gauge is the film gauge (width) used for the release print.
The first DX encoded film to be released was the color print film Kodacolor VR 1000 in March 1983. The first point-and-shoot cameras to use DX encoding to automatically set film speed were released in 1984, including the Pentax Super Sport 35 / PC 35AF-M [ 5 ] and Minolta AF-E / Freedom II. [ 6 ]
For 35 mm film these are 0.1866" and 0.1870" (4.740 mm and 4.750 mm); for 16 mm film they are 0.2994" and 0.3000" (7.605 mm and 7.620 mm). This distinction arose because early nitrocellulose film base naturally shrank about 0.3% in processing due to heat, so film printing equipment was designed to account for a size difference between its ...
The list below is of 35mm film stocks in use in 1956. [18] Ansco Color Negative, Type 844. E.I. 16 Day (w/ Wratten #85 filter), 25 Tungsten (discontinued) Ansco Color Dupe Negative, Type 846, for Intermediate Negatives (discontinued) Ansco Color Print Film, Type 848, for release prints, balanced for approx. 3,000 degrees K (discontinued)