Zenit B
Zenit B (Russian: Зени́т B) is a 35mm single lens reflex camera made by Russian camera manufacturer Zenit in quantities of 889,617 units.[1] It was produced from 1968–1977, either with an M42 mount, or the M39 mount. Shutter speeds were B, 1/30, 1/60, 1/125, 1/250 and 1/500.[2] It is very similar to the Zenit-E, except it does not have a built in light-meter. It also had an instant return mirror, which was common in the era the camera was made. In other countries, the camera was branded as the Kalimar SR100, the Revueflex-B, the Prinzflex-500, and as the Zenit B Global.[1]