Sigma 24-70mm f/2.8 EX DG HSM Lens Review,Amazon.com : Sigma 24-70mm F2.8 DG DN Art for Sony E Lens,SIGMA 24-70mm 2.8 DG HSM OS | Art | SIGMA Corporation of America,Amazon.com : Sigma 24-70mm F2.8 DG DN Art for Sony E Lens,Sigma 24-70mm F/2.8 EX DG HSM Sony A mount from Japan Tested