Photographic film types

photograph in which the tones or colors are reversed from their appearance in nature, usually on a transparent support of celluloid, acetate, or on paper, intended for the purpose of producing positive prints

unexposed color photographic film in a format suitable for use in a motion picture camera

type of photographic film that produces a positive image on a transparent base

Black-and-white photographic film sensitive to the whole visible light spectrum

base material for photographic emulsions

In chemistry, orthochromasia is the property of a dye or stain to not change color on binding to a target, as opposed to metachromatic stains, which do change color. The word is derived from the Greek orthos (correct, upright), and chromatic (color). Toluidine blue is an example of a partially orthochromatic dye, as it stains nucleic acids by its orthochromatic color (blue), but stains mast cell granules in its metachromatic color (red).

chromogenic film and paper used in photography