The Sigma 17-70 mm f/2.8-4 DC HSM OS Wide-Angle Zoom Lens with Macro offers a conveniently compact & versatile design that's ideal for taking with you out on the field. Versatile shooting With a wide zoom range, the high performance 17-70 mm offers versatile shooting options & is ideal for travel, landscape, portraiture & sports. Compact & lightweight, this wide-angle zoom matches perfectly with the smaller bodies of Nikon APS-C DSLRs. A low aperture of f/2.8 makes the 17-70 mm suitable for shooting subjects at extremely close range & in low light conditions. With seven rounded blades making up the diaphragm you can get creative by creating a smooth bokeh in the background. Get closer to your subject A dedicated macro function & minimum focusing distance of 22 cm makes the 17-70 mm ideal for close-up photography. A Hyper Sonic Motor (HSM) ensures quiet focusing, ideal when capturing small insects. For sharp, blur-free images, the 17-70 mm incorporates Sigma's Optical Stabiliser (OS) which offers effective correction of Approx. 4 stops to counter camera shake even during macro photography. Superior quality The 17-70 mm incorporates two  F Low Dispersion glass elements to eliminate chromatic aberration of magnification & axial chromatic aberration for excellent image quality throughout the entire zoom range. Finished with a Super Multi-Layer Coating to reduce flare & ghosting, the 17-70 mm delivers sharp & high contrast results even in backlit conditions. The included tulip shaped lens hood also helps assist with avoiding flare. Sigma USB (Universal Serial Bus) Dock compatible The 17-70 mm is compatible with the Sigma USB (Universal Serial Bus) Dock (sold separately), which enables you to update the lens firmware & adjust parameters such as focus. Offering excellent versatility when shooting, the compact Sigma 17-70 mm f/2.8-4 DC HSM OS Wide-Angle Zoom Lens with Macro is ideal for the travelling photographer.