Olympus PEN EM Half-frame camera DSCF3304.jpg, The Pen EM i…

Descripción

The Pen EM is the first Japanese camera to have an electric driven motor drive and rewind system. The Olympus Pen EM went on sale in 1965 with three new features: an electronic shutter, automatic film advance, and automatic rewind. The electronic shutter allowed an exposure range from 30 sec. down to 1/500 sec. according to the brightness of the subject. Power for the shutter, film advance and rewind systems was provided by two AA batteries. While the Olympus Pen EM had a major influence on the future of electronic technology and automation in cameras, there were manufacturing problems that could not be overcome with the technology then available. Sadly, production ceased after just one year. Specifications Olympus Pen EM 1965. Picture size : 24 X 18mm (single Frame Pen size) Lens : Zuiko 35mm F2. 6 elements in 4 groups. Diaphragm scale : F2, F2.8, F5.6, F8, F11, and F16. Shutter : Copal Elec electronic shutter (diaphragm priority type) using four high performance transistors. Shutter speed : A (automatic) about 30sec (F16 )—1/500 sec , M (manual) 1/30 sec no visible scale indicator for shutter speeds. Synchronizing : X contact point. Film speed scale : ASA 10—400. Camera focusing system : Zone focusing rotary helicoid, eye measuring type. Distance : M (meter) ∞,5 , 3, 2, 1.2, 1, 0.9 . Albeda type light frame finder , magnification 0,6 time , with parallax aid marks for short range photography. Film advance: Electrical motor driven ; advances film at a rate of one frame per second. Film rewind: Quick rewind by electrical motor. Film counter : Remaining number type , take-up stops automatically when “0” appears in the counter. Power source: Two size “AA” 1.5 volt dry cells alkaline type. Will last for over 5 rolls of film. Dimensions : 123 X 73 X 54 mm. Weight : 540 grams.