Ferric chloride is a bleaching solution used on negative materials. Ferrotype process is a method of creating direct positive images with dark enameled metal plates as a base. Also known as the tin-type process. Fiber based paper is photographic paper without a resin coating. Processing times are longer than for other papers, but the paper is more archivally permanent.
Field camera is a sheet film camera suitable for use in location work.
Fill-in is light used to illuminate the shadow areas of a scene. Fill light is a source of illumination that lightens shadows. See Fill-in . Film is a photographic material consisting of a thin transparent plastic base coated with a light sensitive emulsion. Each brand of film exhibits a different characteristic curve.