Sigma 18-35mm F1.8 DC HSM Art Lens – Nikon Fit The Sigma 18-35mm F1.8 DC HSM is a wide aperture, standard zoom-lens for digital single lens reflex cameras with APS-C size sensors. The lens has a focal range equivalent to 27-52.5mm in a 35mm format & it can cover the angles of view of multiple fixed focal length lenses. Part of the Art product line in Sigma’s Global vision campaign the new Sigma 18-35mm F1.8 DC HSM was designed to meet the expectations of users who value a creative, dramatic outcome above compactness & multifunction. This wide aperture, standard zoom lens enables the photographer to expand creative possibilities on any occasion. It incorporates all the important qualities required for an ideal standard lens such as fast maximum aperture, versatility for snap shots, portraiture & indoor photography plus a good combination of wide range of local lengths in a compact design.