To be included in this list, the formats must all have been used in the field or for test shooting, and they must all use photochemical images that are formed or projected on a film base, a transparent substrate which supports the photosensitive emulsion.
The camera must be fast enough (in frames per second) to create an illusion of motion consistent with the persistence of vision phenomenon.
The format characteristics should be clearly definable in several listed parameters (e. g., film gauge, aspect ratio, etc.).
Formats are listed in chronological order and by release date in the case of multiple formats within one year, if this can be determined.
Undated formats are listed at the bottom in alphabetical order.