Minolta telephoto lens with 85mm focal length and f/1.7 aperture — classic portrait focal length with smooth, creamy bokeh rendering.
Technical Details
The lens consists of 5 elements in 4 groups with a Sonnar-like construction. The filter threads vary between 52mm and 55mm depending on the version, and the weight is approximately 320 grams. The number of aperture blades is 6, resulting in a characteristic hexagonal bokeh shape. Two main variants exist: the early MC Rokkor-PF version (1963-1966) with a silver barrel and the later MC Rokkor-PG version (1966-1981) with black paint and improved multi-coating.
History & Development
Minolta introduced the 85mm f/1.7 in 1963 as a supplement to the SR-Mount series, offering portrait photographers a fast telephoto lens alternative. Development was led by Minolta's chief optical designer Yoshiya Yamaki, who had previously worked on the famous 58mm f/1.4. In 1981, production was discontinued in favor of the new MD-Mount lenses, with the 85mm f/1.7 being replaced by the less fast 85mm f/2.
Practical Use in Film
The Rokkor 85mm f/1.7 is particularly suitable for portrait shots and close-ups with a natural perspective on 16mm film. The wide f/1.7 aperture allows for selective focus with soft bokeh, while the moderate telephoto focal length preserves natural facial proportions. Focus breathing is minimal, allowing for smooth focus pulls. Its relatively compact design makes it suitable for handheld work, although manual focusing requires precise follow focus.
Comparison & Alternatives
Compared to the Canon FD 85mm f/1.8, the Rokkor offers one stop more light gathering with similar sharpness performance. The Zeiss Planar 85mm f/1.4 surpasses it in speed and resolution but costs significantly more. Modern alternatives like the Sony FE 85mm f/1.8 offer autofocus and better coatings, but Minolta SR-Mount lenses can be combined with digital cameras via adapters. For a vintage look and characteristic image rendering, the Rokkor 85mm f/1.7 remains a valued option.