Jupiter 21M 200mm f/4
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| Weight: | 980 g |
| Brand: | Zenith |
| Description: | Mount: M42x1 thread, lens type: telephoto, focal length: fixed, fixed lens focal length: 200 mm, aperture F at min. focal length: 4 |
| Type: | Lens |
| Length: | 165 mm |
| Diameter: | 78 mm |
| Focal length: | Permanent |
| Lens type: | Telephoto lens |
| Max viewing angle: | 12 degrees min |
| Minimum focus distance: | 1.8 m |
| Focal length of prime lens: | 200 mm |
| Bayonet: | Thread M42x1 |
| Filter thread diameter: | 58 mm |
| Aperture F at min. focal length: | 4 |
| Minimum aperture F: | 22 |
| Number of element groups: | 3 |
| Number of elements: | 4 |