The Zorky-3 camera was produced at KMZ from 1951 to 1956. The device was produced about 87 thousand units.
Standard lens Jupiter-8 2/50 or Jupiter-17 2/50. I have never seen the second one yet. Lens mount - M39 × 1 thread. The working distance is 28 mm.
The shutter is made of cloth, focal-plane with a horizontal movement. Beats out an extended set of shutter speeds: 1, 1/2, 1/5, 1/10, 1/25, 1/50, 1/100, 1/250, 1/500, 1/1000, V and D. Flash sync and self-timer are not available. The viewfinder is aligned with the rangefinder, the eyepiece magnification is 1.15 ×.There is a diopter adjustment. The weight of my copy without the lens is 550 grams.