The Sigma 17-70mm F2.8-4 DC Macro HSM OS was designed to be the ideal all-purpose lens for APS-C DSLRs. With a versatile focal length and macro capability it is also equipped with a Hyper Sonic Motor (HSM) and an Optical Stabilizer (OS) for superior image quality. The HSM ensures quiet accurate and fast autofocusing while the OS compensates for camera shake when shooting handheld. This lens includes state-of-the-art TSC material (Thermally Stable Composite) which allows for durability and compact size. Two FLD glass elements are incorporated along with one SLD element to reduce color aberration and obtain unmatched image quality. Features a built-in autofocus motor for use with a variety of compact Nikon DSLR cameras.