Contax | Sword bayonet |
They allow the use of P6 lenses on Mamiya 645, Pentax 645 and Contax 645 medium format cameras, Canon EF, Canon FD, Nikon F, Minolta AF, Minolta MD, Contax/Yashica, Pentax K, M42, and Leica R 35 mm cameras, as well as Lumix and Olympus micro 4/3 (m4/3), 4/3 system.
The name "Pentax" was originally a registered trademark of the East German VEB Zeiss Ikon (from "Pentaprism" and "Contax") but, as all Germans patents were annulled with the country's defeat, the name "Pentax" was taken by the Asahi Optical company in 1957.
In 1973, Yashica the company began a collaboration with Carl Zeiss it called Top Secret Project 130 to produce a new, professional 35mm SLR with an electronically controlled shutter bearing the Contax name, and called the RTS (for 'Real Time System').
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Like Zunow, Yashica found it difficult to gain market acceptance with its proprietary SLR lens mount, and redesigned its SLR camera line in 1962 to accept the Contax/Praktica M42 lens mount.
The first Biogon (2.8 / 3.5 cm, unbalanced) was created in 1935 by Ludwig Bertele, then referenced by designer Zeiss Ikon Dresden, the Contax created as a modification of the then Sonnar. It was developed by Carl Zeiss in approximately 1949 and manufactured in Jena, then a redesign in Oberkochen. In 1951 a new Biogon with a 90 ° angle (Super Wide Angle) was also designed by Ludwig Bertele for Carl Zeiss, which opened the way to extreme wide angle lenses.