The FED 3 is a Soviet-era Leica copy made by the FED factory.
FED is indirectly named after Felix Edmundovich Dzerzhinsky, founder of the Cheka.
It was his name that was given to the labour commune at Kharkiv (Ukraine) whose manager,
encouraged a workshop education for indigent children and who decided to copy the Leica in 1932.
The FED 3 is a close clone of the Leica screw mount cameras, using the same M39 mount and rangefinder design.
It uses a horizontal-running cloth shutter and a very similar shutter timing mechanism as the Leica I, II and III series.
However, the external appearance diverges from the Leica screw mounts.
The body is slightly reminiscent of the Leica M3.
It came with the standard Industar-61 52mm f/2.8 lens, a 4 element, 3 group Tessar design.
Surrounding the shutter button is a knob with B and C settings.
Rotate the knob in the 'C' direction for normal shooting.
'B' is for rewinding the camera.
On the wind lever is the film counter (manually resettable) and a film speed/type reminder.
The accessory shoe is "cold" but there's a PC sync connection for X electronic flashes on the front right of the camera.