The Leica Super-Elmar-M 21mm f/3.4 ASPH is a compact, high-performance super-wide-angle lens known for exceptional sharpness, minimal distortion, and superb detail rendition, ideal for architecture, landscapes, and photojournalism. Its sophisticated optical design (with aspherical and special glass elements) corrects aberrations, while its compact build makes it great for street photography, offering excellent image quality even wide open and resisting flare for backlit shots. In original box from first owner. Includes rear cap, sun hood and front cap.