Sigma today announced a new, fee-based service that will enable the company’s Global Vision lens owners to change their lens mounts for use on different camera systems. Starting on 2nd September, Global Vision lens owners can request the Mount Conversion Service to convert their current Sport, Contemporary or Art SLR lenses to their choice of a Sigma, Sony, Pentax, Nikon or Canon mount. Current, applicable full-frame lenses include the 120-300mm F2.8 DG OS Sport and 35mm F1.4 DG Art; APS-C crop sensor lenses include the 30mm F1.4 DC HSM Art, 17-70mm F2.8-4 DC OS Macro Contemporary and 18-35mm F1.8 DC Art. Global Vision category lenses for CSCs (including the 19mm F2.8 DN Art, 30mm F2.8 DN Art and 60mm F2.8 DN Art) can be updated to either a Micro Four Thirds MFT or Sony E- mount. All lenses that undergo the Mount Conversion Service will be covered under warranty for six months following the update.