Firmware Update for SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E

Thank you for purchasing and using our products.
We would like to announce that a firmware update for the SIGMA MOUNT CONVERTER MC-11 SA-E and EF-E is now available.

We announced on May 30th, 2017 that we found that the combination of SIGMA MOUNT CONVERTER MC-11 and some of SIGMA’s interchangeable zoom lenses may not focus precisely, if it is attached to SONY a9 (ILCE-9), released by SONY in May in 2017. This firmware update corrects the phenomenon that when using AF-S mode and shooting in telephoto range, it could occasionally display the shot as in focus, although it may not be correctly locked on the subject.
In addition, it makes it become compatible with the latest firmware of the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA (Firmware Ver.1.02), CANON (Firmware Ver.1.02), as well as the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for SIGMA (Firmware Ver.1.02) and CANON (Firmware Ver1.03).
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 MOUNT CONVERTER MC-11 SA-E / EF-E

【Benefits of this firmware update】
・It has corrected the phenomenon which may occur with the combination of SIGMA MOUNT CONVERTER MC-11 and some of SIGMA’s interchangeable zoom lenses on Sony a9 (ILCE-9) that when using AF-S mode and shooting in telephoto range, it could occasionally display the shot as in focus, although it may not be correctly locked on the subject.
・It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA (Firmware Ver.1.02), CANON (Firmware Ver.1.02), as well as the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for SIGMA (Firmware Ver.1.02) and CANON (Firmware Ver1.03).

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.