Tenax II

The Tenax II model 580/27 is an advanced 24×24mm on 35mm film RF-camera launched by Zeiss Ikon (ZI) in 1938. Its proper name is actually Tenax, but a much simpler camera with the same name, although with a different body casting, was launched the following year, both designed by Hubert Nerwin. The advanced 1938 model is known as mark II, or just Tenax II, while the simpler 1939 model 570/27, is known as Tenax I. The Tenax name goes back to the C. P. Goerz company in Berlin, using it from 1907 on