Sigma MOUNT CONVERTER MC-11 (EF-E) firmware v1.19

Sigma · Released Oct 30, 2018 · First seen Jul 5, 2026

v1.19 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 three Sigma Canon lenses.

  • 40mm F1.4 DG HSM | Art
  • 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary
  • 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary

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 40mm F1.4 DG HSM | Art for ​Canon.

It has become compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary for Canon and the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for Canon, that have the latest firmware Ver.2.00.

Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, p​lease 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.

updatemystuff.com never hosts firmware files — always download from the official source.

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Other versions for this product

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