Sigma MOUNT CONVERTER MC-11 (EF-E) firmware v1.35

Sigma · Released Oct 22, 2020 · First seen Jul 5, 2026

v1.35 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 support for five Sigma lens models.

  • Adds support for 18-200mm F3.5-6.3 DC MACRO, 70-200mm F2.8, 100-400mm F5-6.3, 150-600mm F5-6.3, and 20mm F1.4
  • Requires SIGMA Optimization Pro Ver.1.6.0 or later

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

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What's in this update

It makes the converter compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.03.It makes the converter compatible with the SIGMA 70​-200mm F2.8 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.07.It makes the converter compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.2.02.It makes the converter compatible with the SIGMA 20mm F1.4 ​DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01.

  • Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro

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Changed since v1.34

  • It makes the converter compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.03.It makes the converter compatible with the SIGMA 70-200mm F2.8 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.07.It makes the converter compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.2.02.It makes the converter compatible with the SIGMA 20mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01.

Other versions for this product

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