Sigma MOUNT CONVERTER MC-11 (EF-E)
firmware v1.33
Sigma · Released Aug 20, 2020 · First seen Jul 5, 2026
v1.33 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 three Sigma EF lenses with their latest firmware versions.
- Supports SIGMA 14-24mm F2.8 DG HSM Art (firmware 1.02)
- Supports SIGMA 17-70mm F2.8-4 DC MACRO OS HSM Contemporary (firmware 2.02)
- Supports SIGMA 150-600mm F5-6.3 DG OS HSM Contemporary (firmware 2.03)
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 14-24mm F2.8 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.02.It makes the converter compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.03.
- 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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