Photographic lens
Samyang 8mm F3.5 UMC Fish-Eye CS II Rokinon brand, older version without removable lens hood
Maker Samyang Optics Lens mount(s) Canon EF , Fuji X , Nikon F , MFT , Pentax K , Samsung NX , Sony E , Sony α /Minolta A Type fisheye Focal length 8 mm Focal length (35mm equiv.) 12 mm (except Canon, 12.8 mm, and MFT, 16 mm) Aperture (max/min)f / 3.5–f / 22Close focus distance 0.3 m (0.98 ft) Max. focus distance ∞ Diaphragm blades7 Construction 10 elements in 7 groups Lens-based stabilization NoMacro capable NoAperture ring YesUnique features Diagonal fisheye Application video, general Max. length 72.6–101.4 mm (2.86–3.99 in) depending on mount Diameter 77.8 mm (3.06 in) Weight 410–515 g (14.5–18.2 oz) depending on mount Filter diameter N not possibleLens hood Y yes, fixed except NikonDiagonal 139.3°–180° depending on mount
The Samyang 8mm F3.5 UMC Fish-Eye CS II is a fisheye photographic lens using the stereographic projection [ 1] and is designed for crop factor APS-C DSLRs .[ 2] It is made in South Korea by Samyang Optics and marketed under several brand names besides Samyang, including Bower, Falcon, Polar, Pro-Optic , Rokinon , Vivitar and Walimex Pro (Walser GmbH & Co. KG). There are versions for the Canon EF , Fujifilm X , Nikon F , MFT , Pentax K , Samsung NX , Sony E , Sony α /Minolta A mounts.
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 II version of the lens has a removable lens hood .
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