Mir-1 , 37 mm f/ 2.8 is an interchangeable wide-angle fast lens. Equipped with an iris diaphragm with a device for its pre-installation. Coated optics. Received the Grand Prix at the World Exhibition in Brussels (Expo 58) in 1958. In 1959, the lens was awarded a 2nd degree Diploma from the USSR Exhibition of Economic Achievements. The optical design of the Mir-1 37 mm f/ 2.8 was designed by D. S. Volosov in 1954 for glass formulations available in the USSR based on the Carl Zeiss Jena Flektogon 35 mm f/ 2.8 lens, produced after World War II by the Carl Zeiss plant in Jena. It has a diverging meniscus as the first lens, which significantly reduces vignetting when shooting at an open aperture. The lens is in new condition, the lens has not been used. The set includes an original M42 adapter. Made in USSR