Contax single lens reflex camera, c 1950s.
© National Media Museum / Science & Society Picture Library
The East German Zeis Ikon company introduced the Contax S camera in 1949. It was a 35mm single lens reflex (SLR) camera and was the first SLR to incorporate a pentaprism. It is generally regarded as being the father of all modern 35mm SLR cameras, including this later Contax model.