Sigma announce 85mm F1.4 DG HSM Art, 12-24mm F4 DG HSM Art, and 500mm F4 DG OS HSM Sport Lenses
Sigma announced three new Global Vision lenses, ready for Photokina. It's the Sigma 85mm F1.4 DG HSM Art, Sigma 12-24mm F4 DG HSM Art, and Sigma 500mm F4 DG OS HSM Sport…