Zorki (Russian: Зоркий, meaning sharp-sighted) is the name of a series of 35mm rangefinder cameras manufactured in the Soviet Union between 1948 and 1978.
The Zorki was a product of the Krasnogorsk Mechanical Factory (KMZ), which also produced the Zenit single-lens reflex camera (SLR). The first Zorki cameras were inexpensive Leica II copies just like the FED, but later models were considerably different from the Leica.
When using most Zorki cameras, the shutter speed should only be set after the shutter has been cocked. Setting the shutter speed before the shutter is cocked can permanently damage the camera. This especially affects all Zorki cameras with slow shutter speeds under 1/30 of a second, in particular the Zorki-3 and Zorki-4.