FED's metered screw-mount rangefinder — 35mm, Leica Thread Mount, selenium meter, long-base RF, 1964.
The FED 4 is a Soviet 35mm rangefinder built at the FED works in Kharkiv, Ukraine, continuing the Leica-screw-mount FED line that began with the pre-war FED 1 copy of the Leica II. It reached production around 1964. It keeps the Leica Thread Mount and the taller body of the later FED series while adding a built-in selenium exposure meter.
This is a 35mm coupled-rangefinder camera using the Leica Thread Mount (39mm screw). It has a horizontal-travel cloth focal-plane shutter and a combined rangefinder and viewfinder window with a long rangefinder base. Focusing is by the coupled rangefinder. The FED 4 adds an uncoupled selenium meter on the top plate; exposure is set manually from the meter reading. Slow speeds are provided.
The FED 4 suits users who want a screw-mount rangefinder with a built-in meter and a longer rangefinder base for careful focusing, working with Leica Thread Mount and Soviet Industar and Jupiter lenses. The selenium meter is self-powered and the mechanical shutter fires without a battery. Its larger body handles comfortably for a screw-mount rangefinder.
On the used market the FED 4 is common, inexpensive and offers strong value, but the sample-to-sample quality-control variance typical of former-Soviet-Union bodies means each unit should be checked. Inspect the rangefinder patch for contrast and horizontal alignment, examine the cloth focal-plane shutter for pinholes and capping, and confirm slow speeds. The aged selenium meter is frequently weak or dead, so test it rather than assuming it works.