35mm equivalent to a 250mm lens.
Pentax Super-Multi-Coated Takumar 6x7 500mm f/5.6 is ultra telephoto prime lens for medium format Pentax 67 cameras.
Version 2: Pentax SMC 6x7 500mm f5.6, produced from 1979 to 1989, optics remain unchained from previous version.
Version 3: Pentax SMC 67 500mm f5.6, produced from 1989 to ??, optics remain unchained from previous versions.
Posted by: Jose Date of publication: 05.09.2017