Sigma MOUNT CONVERTER MC-11 (EF-E) firmware v1.03

Sigma · Released Dec 13, 2016 · First seen Jul 5, 2026

v1.03 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

Added compatibility with SIGMA 18-35mm and 50-100mm T2 cine lenses from High Speed Zoom Line.

  • Support for SIGMA 18-35mm T2 EF cine lens added
  • Support for SIGMA 50-100mm T2 EF cine lens added
  • Requires SIGMA Optimization Pro Ver. 1.4 or later

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 wi​th the SIGMA 18-35mm T2 EF mount and the 50-100mm T2 EF mount Cine lenses from High Speed Zoom Line.

  • If SIGMA Optimization Pro is Ver. 1.3 or earlier, please firstly up​date the version of the software to Ver. 1.4.

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Other versions for this product

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