Sigma 24-35mm f/2 DG HSM Art Lens for Nikon FThe Sigma 24 35mm f 2 DG HSM Art is the world's first full frame F2 zoom lens. Covering the most common prime lens mm lineup, the 24 35mm f 2 DG HSM was designed for prime lens performance with the versatility of a zoom lens. With a focal range of 24 35mm and an f stop as high as 2, this lens allows for very artistic shots with a wide range of depth of field. Premium FLD glass, with performance equal to flourite, and seven SLD glass elements allow for