Sigma MOUNT CONVERTER MC-11 (EF-E) firmware v1.10

Sigma · Released Aug 18, 2017 · First seen Jul 5, 2026

v1.10 is not the latest firmware for the Sigma MOUNT CONVERTER MC-11 (EF-E): the current version is v1.43 (August 27, 2026). Go to v1.43

In short — summary by updatemystuff.com

Adds compatibility with a 24-70mm F2.8 Art lens for Canon

  • Compatibility added with SIGMA 24-70mm F2.8 Art lens for Canon (v1.01)

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 24-70mm F2.8 DG OS HSM | Art for Cano​n (ver. 1.01). 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.

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Changed since v1.09

  • It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for Canon (ver. 1.01).

Other versions for this product

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