This is a fantastic ultra wide-angle 21mm f2.8 lens for Canon DSLRs. It is in immaculate condition and the only reason for selling is I am changing systems.The lens comes with its box, Hood and set of manuals. This lens like all Milvus lenses, is manually focusing only. Zeiss Milvus lenses deliver the ultimate focusing experience. Focusing is ultra smooth. The Zeiss Milvus is considered to be best in its class. With its maximum aperture of F2.8 the lens is reflection free. This super wide-angle lens is perfect for specular image composition. Great for fantastic landscape photography. Check the Internet to see the numerous reports of tests on this great Zeiss lens. Zeiss lens are used extensively in the American space program.