Mamiya Sekor C 210mm f/4 M645
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| Weight: | 715 g |
| Brand: | Mamiya |
| Description: | Mount: Mamiya 645, lens type: telephoto, focal length: fixed, prime lens focal length: 210 mm, aperture F at min. focal length: 4 |
| Type: | Lens |
| Length: | 70 mm |
| Diameter: | 137 mm |
| Focal length: | Permanent |
| Lens type: | Telephoto lens |
| Max viewing angle: | 19 degrees min |
| Minimum focus distance: | 0.25 m |
| Focal length of prime lens: | 210 mm |
| Bayonet: | Mamiya 645 |
| Filter thread diameter: | 58 mm |
| Aperture F at min. focal length: | 4 |
| Minimum aperture F: | 32 |
| Number of element groups: | 4 |
| Number of elements: | 5 |