Sigma 28mm F1.4 DG HSM I Art Lens - Nikon MountSigma 28mm F1. 4 DG HSM I Art Lens Nikon Mount Sigma SKU: 441955 Helix SKU: SM441955 Overview The new Sigma wide angle model stands out with its thoroughly corrected magnification chromatic aberration and sagittal coma flare, as well as completely minimized distortion thanks to its optical design. It features water and oil repellent coating on the front lens element and its overall dust and splash proof structure ensures excellent performance even in