Camera Type 35 mm stereo camera viewfinder Manufacturer Kamerawerke Gebrüder Wirgin, Wiesbaden, Germany About 1954 Year Introduced 135 film cartridge Size 197 x 77 x 55 mm (W x H x D) Weight 772 grams (971 grams With everready case) 69.78 mm Lens Separation Image Format 21.80 x 23.90 mm (W x H) Image Window Separation 71.20 mm Lenses Steinheil München Cassar (glass, matched), 1: 3.5 / 35 mm, 25 mm filter thread Iris Diaphragms Diaphragms Between the lenses, Continuously adjustable f / 3.5 to f / 16 Manual Focusing, 3.3 ft. - infinity. Movement of the front elements Central Mechanical shutter Shutter type (or soon Vario), Between the lenses. Cocked with Film advance. Shutter speeds 1/200, 1/100, 1/50, 1/25 and"" B"" Viewfinder Newton viewfinder (approx. 0.6x) Rangefinder n / a Film Loading Manual Film Transport Manual, with rapid winding lever 10 by sprocket holes (= 47.5 mm), sprocket wheel on bottom Film Rewinding Manual. Unlocking With rewind release lever. Frame Counter Additive, 1 to 25. Manual reset. Flash Contact PC-Contact, accessory shoe (no contact) Tripod Socket ¼"" / 20 TPI Selftimer n / a Special Features Double Exposures prevention
