The Sigma 17-70mm f/2.8-4 DC Macro OS HSM is one of those lenses that hits the middle of the price range and offers a lot of features in one package. Specifically designed for APS-C sensors, the equivalent focal length comes in at 25.5-105mm, which still gives a very usable range, along with a macro mode
Sigma 17-70mm f/2.8-4 DC Macro OS HSM: More Than Just a Macro Lens
