Mamiya Sekor C 127mm f/3.8 (Unknown)
A medium format standard lens with leaf shutter, made in Japan for the Mamiya RB67 system
Overview
This is the Mamiya Sekor C 127mm f/3.8, a standard lens for the Mamiya RB67 camera system. It belongs to the Sekor C series and works on both RB67 and RZ67 bodies, including the Pro S and Pro SD variants. It was made in Japan and has a built-in leaf shutter. Photographers have shot it with film like Kodak Tri-X, including in places such as Cornwall.
Specifications
| Focal length | 127mm |
| Maximum aperture | f/3.8 |
| Filter thread | φ77 |
| Shutter speed range | 1/400s to 1s, Bulb |
| Compatibility | For RB67 RZ67, RB67 Pro S SD |
| Lens mount | Mamiya RB67 lens mount |
| Lens type | Standard Lens, MF Lens |
Design
The lens is part of the Mamiya-Sekor C series and is marked "LENS MADE IN JAPAN." The leaf shutter sits inside the lens assembly, as on every lens in the RB67 system.
Market
Used units have been listed at $149.99, and complete camera and lens sets have sold for 500 euros. Some users report internal haze or fog on the lens elements. It's a known issue.
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