Telephoto lens compact lens construction which provides a long focal length with a short back focus. Tempering bath is a large tank or deep tray filled with water maintained at the correct temperature for processing. Used to house tanks, drums or trays as well as containers of processing solutions. Tessar lens is a famous German non-symmetrical lens design by Zeiss. It is based on the triplet lens.
Test strip is a trial and error method of calculating exposure in photographic printing.
A number of exposures are given to a strip of emulsion, over important areas of the image to help judge the correct exposure in the final print. Texture is broadly defined as the surface character of an object. Texture screen is transparent film or glass printed with a fine background pattern. They're interposed between the image and the paper to break up large areas of tone or for special effects. T-Grain technology is the name for Kodaks film emulsion technology used in all Kodak APS films.