Sigma USB Dock enables photographers to update the lens firmware and adjust parameters such as focus
Sigma today announced the release of the new Sigma USB Dock, the accessory dedicated for Contemporary, Art, and Sports product lines that enables you to operate lens firmware update as well as customization including the focus setting. By connecting the USB cable to a computer, Sigma USB DOCK enables photographers to update the lens firmware and adjust parameters such as focus. The adjustment is processed with special software (SIGMA Optimization Pro). The AF speed, focus limiter and OS function are also customizable for Sports lenses.
Focus adjustment, in the case of a single-focus lens can be adjusted to any area a total of 16, respectively (area 4 shooting distance) × (area 4 focal length) if the four areas shooting distance, the zoom lens should be noted. Compatible lenses for Sigma USB Dock are: 35mm F1.4 DG HSM, 17-70mm F2.8-4 DC MACRO OS HSM (Early 2013.), and 17-70 mm F2.8-4 DC MARO HSM (Early 2013.) and 120-300mm F2.8 DG OS HSM (Early 2013.)