Home Slickdeals Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens for Canon &... Slickdeals Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens for Canon & Nikon with APS-C Sensors $249.99 By ARCOM - 27 April 2018 158 0 SHARE Facebook Twitter Go to the deal page: Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens for Canon & Nikon with APS-C Sensors $249.99