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2. List of photographic film formats - Wikipedia

   en.wikipedia.org/wiki/List_of_photographic_film...

   A blank space means that manufacturer did not make film in that size. Two numbers in one box refers to films available with different numbers of exposures, usually 6 and either 10 or 12. Spool length is measured between inner faces of the flanges; several films of the same image size were available on different spools to fit different cameras.

3. List of motion picture film formats - Wikipedia

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

   no standard no standard no standard 1 perf, center spherical 11 mm spherical Home Kinetoscope: Edison: 1912 unknown (amateur format) no standard no standard no standard no standard spherical 22 mm, 2 perf (on frameline between frame rows) 1.5 0.236" × 0.157" (three frames across width) spherical Pathe Kok: Pathé: 1912 unknown (amateur format ...

4. Aspect ratio (image) - Wikipedia

   en.wikipedia.org/wiki/Aspect_ratio_(image)

   In motion picture formats, the physical size of the film area between the sprocket perforations determines the image's size. The universal standard (established by William Dickson and Thomas Edison in 1892) is a frame that is four perforations high. The film itself is 35 mm wide (1.38 in), but the area between the perforations is 24.89 mm × 18 ...

5. Photo print sizes - Wikipedia

   en.wikipedia.org/wiki/Photo_print_sizes

   The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...

6. Film format - Wikipedia

   en.wikipedia.org/wiki/Film_format

   The primary characteristic of a film format is its size and shape. In the case of motion picture film, the format sometimes includes audio parameters. Other characteristics usually include the film gauge , pulldown method, lens anamorphosis (or lack thereof), and film gate or projector aperture dimensions, all of which need to be defined for ...

7. Academy ratio - Wikipedia

   en.wikipedia.org/wiki/Academy_ratio

   Academy ratio 1.375:1. 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.