Sigma MOUNT CONVERTER MC-11 (EF-E) firmware v1.20

Sigma · Released Nov 29, 2018 · First seen Jul 5, 2026

v1.20 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 the SIGMA 70-200mm F2.8 DG OS HSM Sports lens

  • Supports SIGMA 70-200mm F2.8 DG OS HSM Sports lens

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 70-200mm F2.8 DG​ OS HSM | Sports. Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optim​ization 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 v1.19

  • It has become compatible with the SIGMA 70-200mm F2.8 DG OS HSM | Sports.

Other versions for this product

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