The 18-50mm 2.8-4.5 DC OS HSM is a wide-angle zoom lens produced by Sigma Corporation. The lens has four different variates, fitting on the Canon EF mount, Pentax K mount, Minolta A-mount, and the Nikon F-mount. It features internal focusing and internal zooming, as well as two SLD elements and three aspherical lenses.18-50mm F2.8-4.5 DC OS HSM - DC Lenses - SigmaPhoto.comLarge aperture standard zoom lens designed exclusively for digital SLR cameras incorporating Sigma's original OS (Optical Stabilizer) function. 18-50mm F2.8-4.5 DC OS HSM
See also List of Nikon compatible lenses with integrated autofocus-motor
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