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2. Negative pulldown - Wikipedia

   en.wikipedia.org/wiki/Negative_pulldown

   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 ...

3. List of motion picture film stocks - Wikipedia

   en.wikipedia.org/wiki/List_of_motion_picture...

   Tri-X reversal 7266 (16 mm & 8 mm) 200D/160T; Eastman 4-X negative Pan film 5224/7224 500D/400T introduced in 1964 (discontinued in 1990) Kodak 4-X reversal film 7277 400D/320T introduced in 1967 discontinued in 1990; Kodak Tri-X TV reversal film 7727, TVTX, no longer identified by EKC 7727; Eastman Background-X Negative Film 5230, ISO 32 ...

4. List of motion picture film formats - Wikipedia

   en.wikipedia.org/wiki/List_of_motion_picture...

   4 perf, 2 sides spherical × 3 35 mm 4.69 three sub-frames projected to one 180° image spherical × 3 Circular Kinopanorama / Circlorama [38] E. Goldovsky: 1959 The Path of Spring: 35 mm × 11 cameras 1.37 × 11 negatives 0.866" × 0.630" 4 perf, 2 sides spherical 35 mm × 11 projectors 360° 0.825" × 0.602" spherical Varioscope [39] Jan ...

5. 35 mm movie film - Wikipedia

   en.wikipedia.org/wiki/35_mm_movie_film

   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.

6. Film perforations - Wikipedia

   en.wikipedia.org/wiki/Film_perforations

   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 ...

7. Techniscope - Wikipedia

   en.wikipedia.org/wiki/Techniscope

   A Techniscope camera film frame. Techniscope or 2-perf is a 35 mm motion picture camera film format introduced by Technicolor Italia in 1960. [1] The Techniscope format uses a two film-perforation negative pulldown per frame, instead of the standard four-perforation frame usually exposed in 35 mm film photography.

8. Kodak Tri-X - Wikipedia

   en.wikipedia.org/wiki/Kodak_Tri-X

   Tri-X 400 is the more common of the two, available in 24- and 36-exposure rolls of 35 mm and rolls of 120 as well as 50 and 100 ft bulk rolls of 35 mm. Tri-X 320 is available in 4×5", 5×7", and 8×10" sheets. Tri-X 400 is usually rated at ISO 400 when processed in standard developers and remains among the fastest black and white films today.

9. Keykode - Wikipedia

   en.wikipedia.org/wiki/Keykode

   (A) Human-readable Keykode number (the number to the far right advances by one for each 16 frames of 35 mm film or 20 frames of 16 mm film). Next to that is the same information in USS-128 Barcode machine-readable language. (B) Further down the film (within the 16 frames) is the film identifier information and date symbol (C) Other-use symbols.