The samyang 8mm f28 umc fisheye ii lens offers an improved optical construction containing 11 elements in 8 optical groups including 2 aspherical and 3 ed elements for optimum optical performance the lens includes a built in lens hood and the latest generation multilayer anti reflection ultra multicoating umc to minimise flare and ghosting fisheye lenses are popular for special effects use where distortion exaggerated perspective and extreme depth of field are desired manual focus operat