SIGMA Firmware Update Ver. 1.01 (2017.04.18) for 500mm F4 DG OS HSM Sports Lens for NIKON: Improvement 2017-04-25
Sigma: 85mm F1.4 DG HSM Art – Portrait, 12-24mm F4 DG HSM Art – Ultra-Wide Angle Zoom, and Flagship 500mm F4 DG OS HSM Sport Super Telephoto Lenses 2016-10-25
