The Samyang 8mm f/3.5 fisheye is a fisheye photographic lens using the stereographic projection and is designed for crop factor APS-C DSLRs.[1] It is made in South Korea by Samyang Optics and marketed under several brand names, including Rokinon.
 | |
| Maker | Samyang Optics |
|---|---|
| Technical data | |
| Type | fisheye |
| Focal length | 8 mm |
| Aperture (max/min) | f/ 3.5 - f/ 22 |
| Close focus distance | 0.3 m (0.98 ft) |
| Diaphragm blades | 7 |
| Construction | 10 elements in 7 groups |
| Features | |
| Lens-based stabilization |  No |
| Macro capable | No |
| Aperture ring |  Yes |
| Application | video, general |
| Physical | |
| Max. length | 74.8 mm (2.94 in)–103.6 mm (4.08 in) (depends on the mount) |
| Diameter | 75 mm (3.0 in) |
| Weight | 411 g (14.5 oz)–516 g (18.2 oz) (depends on the mount) |
| Filter diameter | not possible |
| Angle of view | |
| Diagonal | 139.3°–180° (depends on the mount) |
The lens uses manual focus only. For most versions of the lens, the aperture must be set manually. For Nikon there are versions with and without a chip to communicate aperture information with the camera. Versions with the chip (model AE8M-N) can set the aperture automatically. The CS version of the lens has a fixed lens hood.
References
edit- ^ Samyang Optics. "8mm F3.5 UMC Fish-Eye CS II". Samyang. Retrieved 2016-05-19.
External links
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