The Contax MFB-1 film back is designed so it can be changed quickly and conveniently. A multiple exposure switch is built in, as is an ISO dial which can be set to any film speed from 6 to 6400 (in 1/3rd increments). A bar code reading system enables film speed to be set automatically as soon as the film is loaded. The standard MFB-1 film back accomodates the standard MFB-1A 120/220 film insert or the MFB-1B 220 vacuum insert. The film back has a dark slide pocket and a memo holder. The MFB-1A Film...