The samyang 12mm f20 ncs cs lens is a manual focus wide angle prime with the fuji x fit for use with fujis compact system cameras such as the x pro1 x e2 and x t1 its lightweight 260g construction combined with its large f20 aperture makes this lens perfect for a wide range of applications including travel landscape interior architecture and astrophotography the lens uses nanocrystal anti reflective coating that sits on the lens elements surface to ensure better light transmissio