Amazon.com : 50mm F1.4 Art DG HSM for Sony E Black : Electronics,Sigma 50mm F1.4 DG DN Art - Sony E - Mike's Camera,SIGMA 50mm F1.4 DG HSM | Art | SIGMA Corporation of America,50-1.4-DG-DN-compare-copy.png,Amazon.com : 50mm F1.4 Art DG HSM for Sony E Black : Electronics