Mamiya Sekor C 55mm f/2.8 M645
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| Weight: | 305 g |
| Brand: | Mamiya |
| Description: | Bayonet mount: Mamiya 645, lens type: wide-angle, focal length: fixed, prime lens focal length: 55 mm, aperture F at min. focal length: 2.80 |
| Type: | Lens |
| Length: | 70 mm |
| Diameter: | 59.4 mm |
| Focal length: | Permanent |
| Lens type: | Wide angle |
| Max viewing angle: | 65 deg.min |
| Minimum focus distance: | 0.45 m |
| Focal length of prime lens: | 55 mm |
| Bayonet: | Mamiya 645 |
| Filter thread diameter: | 58 mm |
| Aperture F at min. focal length: | 2.8 |
| Minimum aperture F: | 22 |
| Number of element groups: | 6 |
| Number of elements: | 8 |