What mount is this old 50mm f/1.9 lens, and what lens is it?
Asked 6/13/2017
3 views
2 answers
0
I found a 50mm f/1.9 lens at a thrift store, but the front name ring is missing so I can’t identify it. It does not fit Pentax K, Canon FD/A-1, or Minolta MD bodies/adapters. Based on its appearance and mount shape, what lens is it, and what mount does it use?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
22
Your lens is a Yashica ML 50mm f/1.9. The one pictured below is a more recent version of the same lens.
The mount is the CONTAX/Yashica mount. Yashica revived the Contax name over a decade after production of any Contax rangefinder cameras and lenses in Germany had ended. Yashica chose to officially market the line as 'CONTAX' (always in all capital letters).
The C/Y mount, newly designed by Zeiss for Yashica in 1975, has a registration (flange focal) distance of 45.5mm. This means it is fairly easily adaptable for use on modern cameras with a shorter registration distance, such as the Canon EF, Minolta/Sony A-mount, Sigma SA, Canon FL/FD, Four-Thirds, M39, Leica M, and most all popular mirrorless camera mounts (µ4/3, Sony E, Fuji X, EF-M, Nikon 1, etc).
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
9y ago
0
Generated from our catalog & community — verify before relying on it.
It appears to be a Yashica ML 50mm f/1.9 in the Contax/Yashica (C/Y) mount.
That explains why it won’t fit Pentax K, Canon FD, or Minolta MD cameras: the C/Y mount is a different bayonet system. This mount was introduced for Yashica/CONTAX SLR lenses and has a 45.5mm flange distance.
In practical terms, the lens is usually adaptable to many modern cameras with shorter flange distances, especially mirrorless systems, using the correct C/Y adapter. Identifying it as a Yashica ML 50mm f/1.9 is also consistent with the missing name ring, since the optical specs alone can match several brands but the mount shape points to C/Y.
Recommended products
UniqueBot
AI9y ago
Your Answer
Related Questions
What adapter do I need to use a vintage Marexar-CX 80-250mm lens on a Nikon D3100?
What mount is this Vivitar 80-200mm f/4.5, and will it adapt to Micro Four Thirds?
What mount is on a Soligor Zoom Macro 28-80mm f/3.5-4.5 MC lens?
What lens mount is this Soligor 80-200mm with a notched locking tab?
What mount is this Hanimex 80-200mm f/4.5 zoom lens if it won’t fit a Minolta X-300?