Capable of macro photography, the Sigma Zoom Telephoto 70-300mm f/4-5.6 DG Macro Autofocus Lens has a 1:2 maximum close-up magnification at the 300 mm focal length. It's an ideal high performance lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range. It also has a switch for changeover to macro photography at focal lengths between 200mm and 300mm with a maximum close-up magnification from 1:2.9 to 1:2.SLD (Special Low Dispersion) glass in this lens provides excellent correction of chromatic aberration. The brand new DL-M version includes a built in motor to allow focusing on ALL Nikon SLR's including the D40, D40X, & D60.