Zeiss Distagon T* 3.5/18 ZK
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| Weight: | 470 g |
| Brand: | Zeiss |
| Description: | Mount: Pentax KA/KAF/KAF2/KAF3, lens type: wide-angle, focal length: fixed, prime lens focal length: 18 mm, aperture F at min. focal length: 3.50, features: internal focusing |
| Type: | Lens |
| Functions: | Internal focus |
| Length: | 84 mm |
| Diameter: | 87 mm |
| Focal length: | Permanent |
| Lens type: | Wide angle |
| Max viewing angle: | 99 deg.min |
| Minimum focus distance: | 0.3 m |
| Focal length of prime lens: | 18 mm |
| Bayonet: | Pentax KA/KAF/KAF2/KAF3 |
| Filter thread diameter: | 82 mm |
| Aperture F at min. focal length: | 3.5 |
| Minimum aperture F: | 22 |
| Minimum viewing angle: | 90 deg.min |
| Number of element groups: | 11 |
| Number of elements: | 13 |