The Sigma 14-24mm F2 8 DG HSM Art is the ideal ultra-wide-angle zoom lens for the most demanding photographers Sigma 14-24mm features updated Hyper Sonic Motor (HSM) provides fast and accurate autofocu utdoor shooters will appreciate the dust- and splash-proof construction with special sealing at the mount connection manual focus ring zoom ring and cover connection With the growing popularity in multi-camera VR Videography a new front conversion service is available to convert to a round hood for these specialized applications Image Stabilization: Optical