The samyang 12mm f20 ncs cs lens is a manual focus wide angle prime with e mount designed specifically for use with sonys aps c compact system cameras such as the sony a6000 and a5000 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 bett