Movie camera for 8mm film with spring drive. Start / stop at the top of the camera, also adjustable for single-frame shots. No adjustment distance (focus fixed). Variable iris diaphragm, adjustable from 2.8 to 16. Depth of field several diaphragms at different distances behind the rewind button. Carl Zeiss Triotar 1: 2.8 F = 10 mm. built-in exposure meter: The indicator can be placed on the mark by adjusting opening for the right fit. It adjustable for speed film 27 Din / handle 320. The remaining length of the film (in meters and feet) is indicated by a sensor inside the front feet and meters.