From SIGMA:
Firmware update for SIGMA’s interchangeable lenses for CANON EF mount
Thank you for purchasing and using our products.
We would like to announce that a new firmware update for SIGMA’s interchangeable lenses for CANON EF mount listed below is now available.
For customers who own the SIGMA USB DOCK and applicable products listed below, please update the firmware via SIGMA Optimization Pro.
* Before updating the firmware using the SIGMA USB DOCK, please ensure to update SIGMA Optimization Pro to Ver. 1.5.0. or later for Windows / Ver. 1.5.1. or later for Macintosh
Applicable product
Benefits of the update
Applicable product
Benefits of the update
Applicable products
Benefits of the update
SIGMA Optimization Pro Download page
Thank you for purchasing and using our products.
We are pleased to announce that a new firmware update for interchangeable lens for Sony E-mount is now available.
Applicable products
Benefits of the update
To update the firmware, please refer to this link.
* Before attaching the updated lenses to the camera body, please remove the battery pack from the camera and put it back in again.