Mamiya Sekor Z 250mm f/4.5 RZ65
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| Weight: | 1080 g |
| Brand: | Mamiya |
| Description: | Mount: Mamiya 645, lens type: telephoto, focal length: fixed, prime lens focal length: 250 mm, aperture F at min. focal length: 4.50 |
| Type: | Lens |
| Length: | 126 mm |
| Diameter: | 97.2 mm |
| Focal length: | Permanent |
| Lens type: | Telephoto lens |
| Max viewing angle: | 20 degrees min |
| Minimum focus distance: | 1.85 m |
| Focal length of prime lens: | 250 mm |
| Bayonet: | Mamiya 645 |
| Aperture F at min. focal length: | 4.5 |
| Minimum aperture F: | 45 |
| Number of element groups: | 4 |
| Number of elements: | 5 |