Medium-Format Camera

a camera with a frame size (according to the USSR State Standard) of 45 × 60, 60 × 60, 60 × 70, or 60 × 90 mm. The images obtained on the film have corresponding sizes of 41 × 57, 57 × 57, 57 × 72, and 57 × 82.5 mm, with a tolerance of ± 1 mm.