Conclusion: The distinctive rattle when we first lifted the lens up to the camera body made our hearts sink. Thankfully our initial fears were unfounded, as shooting at all focal lengths during our time at a local market showed impressive image quality throughout the frame, and reinforced the solid results we'd...
Sigma AF 17-50mm f/2.8 EX DC OS HSM (Nikon) - Review / Test Report
19 October 2010
Conclusion: The Sigma AF 17-50mm f/2.8 EX DC HSM OS is a highly competitive APS-C standard zoom lens and Sigma's best product in this class so far. It's not a flawless lens, though, but none really is.