The samyang 10mm f28 ed as ncs cs ultra wide angle lens with canon ef fit has been carefully constructed to obtain the highest possible optical parameters while remaining at a manageable size and weight this f28 fast manual focus prime lens provides an exceptionally wide field of view of up to 1095 degrees making it perfect for indoor architecture sport journalism landscape and lowlight photography the products optics comprise 14 elements divided into 10 groups including 2 aspherica