Modify and enhance specific Sigma L-mount lenses, teleconverters, and mount converters using the UD-11 USB Dock. When paired with Sigma's Optimization Pro software, this valuable tool allows for firmware updates of lenses and adjustments to focus movement and manual focus timing during the operation of the focus ring. Lens Compatibility The UD-11 USB Dock can be used to update firmware as well as fine-tune the manual focus operation timing adjustment on the following lenses: 16mm f/1.4 DC DN Contemporary 30mm f/1.4 DC DN Contemporary 56mm f/1.4 DC DN Contemporary 100-400mm f/5-6.3 DG DN OS Contemporary 45mm f/2.8 DG DN Contemporary 14-24mm f/2.8 DG DN Art 24-70mm f/2.8 DG DN Art 35mm f/1.2 DG DN Art The UD-11 USB Dock can be used to update firmware on the following lenses, teleconverters, and mount converters: 14mm f/1.8 DG HSM Art 20mm f/1.4 DG HSM Art 24mm f/1.4 DG HSM Art 28mm f/1.4 DG HSM Art 35mm f/1.4 DG HSM Art 40mm f/1.4 DG HSM Art 50mm f/1.4 DG HSM Art 70mm f/2.8 DG Macro Art 85mm f/1.4 DG HSM Art 105mm f/1.4 DG HSM Art 135mm f/1.8 DG HSM Art TC-1411 1.4x Teleconverter TC-2011 2x Teleconverter MC-21 Mount Converter
