Samyang 8mm f/2.8 UMC Fish-eye II Front and rear lens caps The Samyang 8mm F2.8 UMC Fisheye Lens is a high quality ultra wide angle lens. It gives an immense field of view - 180 degrees, with a 12mm (35mm equivalent) field of view. The optical construction of the lens is 11 elements in 8 optical groups including 2 aspherical and 3 ED elements for optimum optical performance. The aperture consists of six diaphragm blades with apertures available from F2.8 to F22. The Samyang 8mm fisheye features the latest generation multilayer anti-reflection ultra multi-coating (UMC) to minimise flare and ghosting. The integrated lens hood also helps to reduce flare from behind the lens. 180 wide angle of view Extra low dispersion (ED) Ultra multi coating (UMC) Glass aspherical lenses (AS)