Mir (lens)
MC Mir-47M 2,5/20mm
Mir 1W 2,8/37mm
Mir (Russian: Мир) is a Soviet wide-angle prime lens series with focal lengths varying from 12 to 65 mm with 5-7 elements.
The first variant was the Mir-1 and won the Grand Prix at Expo '58 in Brussels. Its construction was derived from the Flektogon lens by Carl Zeiss. The first element in this lens is in fact a disperser meniscus to reduce vignette effects when photographing with an open diaphragm.