Transparent magnetic layer is the information storage layer built into Advanced Photo System film that enables enhanced information exchange capabilities. Transposing frame is a frame used for printing pairs of stereoscopic negatives from a two lens camera. Tray development is any process carried out in open trays rather than using tanks or similar apparatus. Trichrome Carbro Process is a method of making assembly color prints from separation negatives, using an adaptation of the carbro process. Tri-color filters are filters in deep primarily colors used to expose color prints by the additive method.
Trigger is a term used to describe a shutter release.
Tripack is a photographic material, used in color photography, consisting of three emulsion layers of different sensitivity each on its own base. It is used to obtain three separation negatives with a single exposure. Triple extension is a camera system in which lens-image distance can be extended by as much as three times its focal length. It is particularly useful for close-up photography. Triplet lens is a lens consisting basically of three elements, a diverging lens sandwiched between two converging lenses.