Contax 50mm f/1.7 Planar T* (1972–1975)
A Carl Zeiss-designed 50mm prime lens for the Contax/Yashica C/Y mount, produced circa 1972-1975.
Overview
The Contax 50mm f/1.7 Planar T* is a manual focus lens designed by Carl Zeiss for the Contax/Yashica C/Y mount system. It was made around the early 1970s, and serial number ranges suggest production ran between 1972 and 1975. It belongs to the Planar optical design family, which is known for sharp, balanced images. It carries Zeiss's T* anti-reflective coating, which improves contrast and light transmission.
Specifications
| Focal length | 50mm |
| Maximum aperture | f/1.7 |
| Mount type | C/Y mount |
| Filter size | 55mm screw-in (57mm cap) |
| Coating | T* |
| Lens design type | Planar |
Design
The lens is noted for its optical precision and its design, which gives natural, balanced images. The T* coating reduces flare and improves contrast.
Market
Listings show near-mint examples at $209.99, and a Pentax-mount version was listed at $325 USD. One reviewer calls a sub-$200 price a bargain for a Zeiss 50mm faster than f/2, especially next to modern equivalents like the $809 Sony-mount Zeiss 50mm f/2. A tested unit was confirmed in perfect working condition, free of haze, fungus, and scratches.
eBay Listings
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