Porst Compact-Reflex with Porst Colour Reflex 55mm f2.8 Prime LensThe Porst Compactreflex SP is a manual focus 35 mm SLR made in the late 1970s for the German retailer Porst. Built by Cosina under an M42 screw mount design, this sturdy camera accepts interchangeable lenses and features shutter speeds from 1 1000 s to 4 s plus bulb mode. It includes both spot and average TTL light metering, a selftimer, tripod socket and hot shoe for flash. Paired with the Porst Colour Reflex 55 mm f 1. 7 lens, it offers fast