Thank you for purchasing and using our products.

We would like to announce that a firmware update for the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA and CANON, as well as a firmware update for the SIGMA MOUNT CONVERTER MC-11 SA-E and EF-E is now available.

This firmware update corrects the phenomenon that the OS mechanism does not operate properly when attached to the SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E.

For customers who own the SIGMA USB DOCK, please update the firmware via SIGMA Optimization Pro. For those who own the SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E, please update the firmware via SIGMA Optimization Pro by connecting it to a computer using the supplied USB Cable.
Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh from the following download page.

Applicable product
SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA / CANON

Benefit of this firmware update
– It has corrected the phenomenon that the OS mechanism does not operate properly when attached to the SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E.

Applicable product
SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E

Benefit of this firmware update
– It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA / CANON (ver. 1.01).

SIGMA Optimization Pro Download page
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/
For further assistance please contact Sigma Imaging (UK) Ltd Service Department by emailing service@sigmauk.com or telephoning 01707 329 999

We appreciate your continued support for our company and products.