A usually black light tight, double zippered, cloth bag used for changing film or loading large format film holders.
Double chambered black bag used for loading film into magazines.
A light proof black fabric bag that permits film and other light-sensitive materials to be handled in normal room light. Has a double zipper on one end and two armholes with elastic sleeves on the other.
opaque fabric bag, which is light tight and inside sensitive materials may be handled safely.
a light-tight bag into which a photographer can insert his/her hands to handle film when a darkroom is not available
A changing bag is a bag specifically designed so that it does not allow light to enter while in usage. It is required for certain applications involving photosensitive materials when a dark room is not available. Common usages include removing film from its canister to put it into a developing tank.