Amazon.com : Sigma 24-70mm f/2.8 IF EX DG HSM AF Standard
Amazon.com : Sigma 24-70mm f/2.8 IF EX DG HSM AF Standard,Sigma 24-70mm f/2.8 DG OS HSM Art Lens - Canon EF Mount,Sigma 24-70mm f/2.8 EX DG Lens Review,Sigma 24-70mm f/2.8 EX DG HSM IF Lens for Canon EF-Mount {82,Used Sigma 24-70mm f/2.8 EX DG HSM - Canon EF Fit | MPB