Sigma MOUNT CONVERTER MC-11 (SA-E) firmware v1.09

Sigma · Released Mar 7, 2018 · First seen Jul 5, 2026

v1.09 is not the latest firmware for the Sigma MOUNT CONVERTER MC-11 (SA-E): the current version is v1.28 (August 27, 2026). Go to v1.28

In short — summary by updatemystuff.com

Adds 14-24mm lens support, improves autofocus for select lenses in peripheral and Eye AF modes, and fixes flash lag issues.

  • Added support for SIGMA 14-24mm F2.8 DG HSM Art
  • Improved autofocus for SGV lenses in peripheral areas and Eye AF mode
  • Fixed release time lag during flash photography with incompatible lenses

Written from Sigma's release notes, which are printed in full below.

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What's in this update

It has become compatible with the SIGMA 14-24mm F2.8 DG HSM | Art for SIGMA.With the SGV lenses*1 listed below, it has improved AF performance in the peripheral areas of the image as well as when the “Eye AF” function is selected.

With lenses that are not compatible with the MC-11, it h​as corrected the release time lag which occurred during flash photography.*2 Note: 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. *1 SIGMA 35mm F1.4 DG HSM | Art, SIGMA 50mm F1.4 DG HSM | Art, SIGMA 85mm F1.4 DG HSM | Art, SIGMA 135mm F1.​8 DG HSM | Art, SIGMA 18-35mm F1.8 DC HSM | Art, SIGMA 24-70mm F2.8 DG OS HSM | Art, SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary ＊2 Please note that this does not guarantee accurate operation with all the lenses that are not compatible with the MC-11.

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Other versions for this product

See the full firmware history for the MOUNT CONVERTER MC-11 (SA-E)