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.

This firmware improves the stability of the image in the viewfinder, making it easier to confirm compositions. Furthermore, there is an improvement to the phenomena that are particular to some lenses when they are used in combination with the Canon “EOS R” and their “Mount Adapter EF-EOS R”, or “Control Ring Mount Adapter EF-EOS R”. This was previously reported in our announcement of January 16th, 2019 .

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.

[Applicable product]
SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount

[Benefit of the update]
・It has improved the stability of the image in the viewfinder, making it easier to confirm composition, thanks to the updated control algorithm of the Optical Stabilizer.

[Applicable product]
SIGMA 135mm F1.8 DG HSM | Art for CANON EF mount

[Benefit of the update]
・When the lens is used in combination with the Canon “EOS R” and their “Mount Adapter EF-EOS R”, or “Control Ring Mount Adapter EF-EOS R”, it has corrected the phenomenon whereby it may occasionally show overexposure when narrowing down the aperture from F3.5 while shooting.

【SIGMA Optimization Pro Download page】
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
https://www.sigma-global.com/en/about/world-network/

We appreciate your continued support for our company and products.