The Leningrad is a 35mm interchangeable lens rangefinder camera manufactured in the USSR from 1956-1966. It takes Leica thread mount (L39/LTM) lenses. With a parallax-corrected, multi-frame line (5cm, 8.5cm, 13.5cm) rangefinder and a unique motor winding mechanism, it is the most advanced rangefinder ever manufactured in the Soviet Union.