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.

[Applicable product]

・SIGMA MOUNT CONVERTER MC-11 SA-E
・SIGMA MOUNT CONVERTER MC-11 EF-E

[Benefits of the update]

・Fixed a problem in which the MF assist function would not work in rare cases when a lens with the MF switching function (Manual Override) enabled, or a lens with the focus mode switch set to MO was attached.
・Fixed a problem in which the AF would not work in rare cases when the focus ring was turned during video recording in AF mode with a lens which has the MF switching function (manual override) enabled.

[How to update]

Connect the SIGMA MOUNT CONVERTER MC-11 to a computer with the included USB cable, then open SIGMA Optimization Pro*. If there is a newer firmware version available than the one currently installed on your converter, you will see the message ‘There is the latest firmware for the converter’. Click ‘Yes’ to update.

*Before attaching the updated SIGMA MOUNT CONVERTER MC-11 to the camera body, please remove the battery pack from the camera then reinsert.
*Please be sure to update SIGMA Optimization Pro to the latest version when updating the MC-11 firmware.

【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.