The Sigma USB Dock for Pentax K mount allows you to update / adjust compatible Sigma Global Vision lenses using their free software. Key features include:
- Sigma Optimization Pro: The free Sigma Optimization Pro software is simple to use, enabling you to update firmware as well as make focus adjustments on the latest Sigma A1 lenses. The software is compatible with both Mac and PC systems. Compatible lenses include:
- Sigma 18-35mm f/1.8 DC HSM A1 for Pentax
- Sigma 35mm f/1.4 DG HSM A1 for Pentax
- Customized Calibration: With four adjustable categories to customize focus distance for prime lenses and sixteen for zoom lenses (4 distances x 4 focal lengths), the USB Dock allows precision calibration for the specific camera / lens setup.
This item only calibrates the lenses listed above!