The Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens for Nikon F is tailor-made for professional photographers. Its advanced optical design and compact size make it ideal for handheld photography. The lens features a Hyper Sonic Motor that quickly focuses on an object. You can use the manual focusing for an authentic photography experience. The lens has four Special Low Dispersion Elements that reduce color fringe. A beautiful bokeh quality is achieved by a nine-blade diaphragm. The optical stabilizer reduces camera shake to ensure a clear picture quality. A Thermally Stable Composite (TSC) material is used for the construction of the lens, which makes it work perfectly in different temperatures. This telephoto zoom lens is designed for FX-format Nikon F-mount DSLRs.