The Sigma 14-24mm F2.8 DG HSM Art is billed as the ultimate ultra-wide-angle zoom for Canon and Nikon 35mm full-frame DSLRs. While minimising distortion, this lens offers outstanding F2.8 brightness throughout the zoom range and delivers top-level image quality at every focal length and every shooting distance. Pricing is still to be confirmed, with delivery for Canon, Nikon and Sigma mounts due in March.