Sigma 28-105mm f/2.8-4.0 DG Lens for Nikon Digital SLR Cameras Large aperture standard zoom lens ideal for snap shots and indoor photography Focal length of 28mm to 105mm with 5.5x maximum zoom magnification Most effective coating used for minimizing flare and ghosting Aspherical lens reduces various aberrations and improves optical performance For Nikon digital SLR cameras