This Sigma DC lens for Nikon cameras has an impressive 18 mm ??? 200 mm focal length range, allowing the freedom to go from shooting vast landscapes to zooming in on details without having to change lenses. This super-zoom Sigma DC lens for Nikon cameras has a fast aperture range of f/3.5 ??? f6.3 and contains both a HyperSonic Motor (HSM) and Optical Stabilization (OS) technology. Both of these features, and in particular the Optical Stabilization (OS) technology, considerably reduce image blur resulting from camera shake that often occurs with super-zoom lenses. The Sigma DC 18 mm ??? 200 mm f/3.5 ??? f/6.3 OS DC lens has a 17.7-inch minimum focusing distance so users can get up close to their subjects as well as zoom in on them. Photographing sports or other moving activities is made much easier with the Sigma DC 18 mm ??? 200 mm f/3.5 ??? f/6.3 OS DC lens because it is able to recognize a panning movement and will then operate in only one axis, giving the user a clearer, more useable photo as the end result. This Sigma DC lens for Nikon cameras has a total of 18 elements in 13 groups, one Super Low Dispersion glass element, and at least three aspherical elements which help to considerably reduce aberrations.