Abstract: A camera is disclosed for mounting adjacent an instrument such as a cathode ray tube device for recording an image from the display screen thereof. The camera includes an enclosure with a first opening for cooperation with the display screen of the instrument and a second, large opening across which a standard film cassette is mounted. The film cassette is held in place by a lower stationary holder and an upper attaching device which includes a movable latch. The latch is manually movable between a latched and unlatched position. It is automatically held in the unlatched position after manual movement thereinto, and it automatically moves into the latched position when a film cassette is brought into cooperating engagement with the large camera opening. The camera enclosure includes a floating inner frame having a surface which engages with the inside of the film cassette and which contributes to the positioning of the film cassette.