Sigma 70-300mm f/4-5.6 SLD DG Macro Lens with built in motor for Nikon Digital SLR Cameras
The built-in motor allows autofocus with all Nikon digital  ameras. These lenses incorporate a macro feature with  aximum magnification 1:2 at the 300mm focal length. It is suitable for various types of shooting conditions.  This telephoto lens has a 1:2 maximum magnification at the 300mm focal length. It is ideal for portraits, sport and other types of photography. SLD (Special Low Dispersion) glass provides excellent correction of chromatic aberration. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range.Lens Construction14 Elements in 10 GroupsAngle of View: 34.3 - 8.2 degreesNumber of Diaphragm Blades:  9 BladesMinimum Aperture:  F22Minimum Focusing Distance:  95-150cm / 37.4-59.1 in.Maximum Magnification:  1:4.1 (1:2 Macro mode)Filter Size:  Diameter 58mm (Rear)Filter Size:  Bayonet-type HoodDiameter: 76.6mmLength: 119.5mmWeight: 540g/19 oz.