Thank you for purchasing and using our products.
This firmware update allows you to use the SIGMA USB DOCK with the SIGMA 120-300mm F2.8 DG OS HSM F/CANON. If you have the products mentioned below, please start up SIGMA Optimization Pro and then operate lens firmware update.
- SIGMA 120-300mm F2.8 DG OS HSM S013 F/CANON
Benefits of this firmware update
- Improved Auto Focus speed for "Standard" and "Speed-priority" modes.
- Improved focus accuracy when mounted on Canon EOS-1D Mark III or Canon EOS-1D Mark IV.
SIGMA Optimization Pro Download page