Nikon SP
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The Nikon SP is a professional level, interchangeable lens, 35 mm film, rangefinder camera introduced in 1957. It is the culmination of Nikon's rangefinder development which started in 1948 with the Nikon I, and was "arguably the most advanced... Wikipedia
Viewfinder: Dual brightline and etched frame viewfinder
Lens: interchangeable lens, Nikon 'S' bayonet mount
Shutter: mechanically timed
Weight: 590 g (1.30 lb)
Dimensions: 136 mm (w) × 81 mm (h) × 43 mm (d)
Exposure metering: no integrated meter
Exposure modes: Manual (M), and Bulb (B)