The samyang optics 21mm t15 ed as umc cs is a wide angle manual focus cine lens for mirrorless cameras with aps c sized sensors with broad 21mm angle of view and 3 glass aspherical lens elements it provides a superb opportunity to explore the depth and breadth of a scene the 21mm t15 lens can be used for a wide range of purposes such as exterior and interior landscape work and portraits with depth bright t15 aperture ultra multi coating umc technology of samyang optics cir