Sigma 17-70mm F2.8-4 DC MACRO OS HSM

Available in a wide variety of APS-C camera model mounts, the Sigma 17-70mm delivers a very useful zoom range of 25.5-105mm (equivalent), plus has close-focusing capability (22cm, 8.7″). The incorporation of a smaller OS unit (in those lenses for cameras without built-in stabilization) makes for a more compact design (79 x 82mm, 3.1 x 3.2″). The lens is constructed with 16 elements in 14 groups and contains 2 FLD, 1 SLD and 3 aspherical glass elements for enhanced image quality. A 7-blade diaphragm, Hyper-Sonic Motor, brass made bayonet mount, and SIGMA USB dock for firmware updates round out the impressive specifications.