Backing is a dark coating, normally on the back of a film, but sometimes between emulsion and base, to reduce halation . The backing dye disappears during processing. Backlighting is light coming from behind the subject. Back printing is the information printed on the back of a picture by the photofinisher. The system standard requires the printing of frame number, film cassette number and processing date automatically on the back of each Advanced Photo System print.
Back projection is a projection system often used to create location backgrounds in the studio.
Bag bellows is a short flexible sleeve used on large format cameras in place of normal bellows when short focal length lenses are employed. Baird, John 1888-1946. Pioneer of television in Great Britain. Balance is the placement of colors, light and dark masses, or large and small objects in a picture to create harmony and equilibrium. Ball and socket is a swiveling mount used to attach a camera to a tripod, consisting of a large ball joint designed to move in a cup.