Capture photos from your Canon EF-mount camera with high resolution and less distortion, by using the Sigma 12-24mm f/4 DG HSM Art Lens. It features a Super Multi-Layer coating that is applied to the lens elements for suppressing unwanted ghosting and lens flare. The integrated HSM (Hyper Sonic Motor), which is complemented by an optimized AF algorithm, helps in focusing on your subjects smoothly with outstanding performance. The rounded 9-blade diaphragm enables the lens to produce a beautiful out-of-focus background effect for your pictures. The dust- and splash-proof lens comes with a rubber sealing to protect the mount, as well as an oil- and water-repellent coating on the rear and front elements.