Sigma has announced five new Sigma Global Vision lenses during the Photokina 2018 including the much anticipated 60-600mm f/4.5-6.3 DG OS HSM Sports. The new Sigma 28 mm f/1.4 DG HSM Art lens boasts thoroughly corrected chromatic aberration and sagittal coma flare, as well as completely minimised distortion. It features water- and oil-repellent coating on the front lens … [Read more...]