The Leningrad was a 35mm rangefinder camera made in ex-USSR by GOMZ. It had a spring motor advance, and took 39mm screw lenses. The rangefinder was of the split image type, combined in the viewfinder. In the viewfinder there were fixed black frames to indicate the field of view for the 50mm, 85mm and 135mm focal lengths, the whole finder covering the 35mm focal length. The clockwork winding mechanism does not allow continuous shooting, the user must press the shutter release each time (12 - 15 exposures can be made before the camera needs to be wound again). The film take-up system is unique as it ignores sprocket holes on 35mm film. Instead it winds the film onto a fat take-up spool. No account was taken of the increasing diameter of this spool as film is wound onto it, resulting in increasingly larger gaps between the negatives on a roll. Therefore, negatives must be ordered 'uncut' from labs because modern automated negative cutting will not adjust for the unique negative layout from the Leningrad. Slides must also be ordered 'uncut' and mounted in frames by the user. This is only an issue if you don't know about it and is not considered a flaw- they were designed that way! Built very sturdily, and to a high degree of precision, the Leningrad is said to be the most advanced (and expensive) Soviet rangefinder ever made. Many were given as presents to visiting dignitarys and party members. Just 70,000 units were made, it is not known how many survive.