Sigma 18-35/1.8 DC HSM Art for Nikon

The Sigma 18-35mm f1.8 DC HSM Lens is the first wide-angle zoom lens (as of 22nd April 2013) to achieve a maximum aperture of f1.8 throughout the entire zoom range. The Sigma 18-35mm is a standard zoom lens that offers a focal range equivalent to 27-52.5mm in the 35m format.