It was produced by the Kharkov Production Machine-Building Association "FED" from 1964 to 1982. The main difference between the FED-4 camera and the jointly produced FED-3 camera is the presence of a built-in non-coupled selenium exposure meter and a modified (reduced) film rewind handle.The camera had a cast aluminum body with a removable rear wall; both standard cassettes and two-cylinder ones with a wide opening slit were used. Accessory shoe allow to mount viewfinder or flash. Tripod mount: 1/4". Focal Length = 53mm, aperture from 2.8 to 16.The lens has a unique lanthanum coating.The camera with the film has not been tested, so it is sold as is, without complaints and returns. This is an excellent instance for the collection.