Sigma MOUNT CONVERTER MC-11 (EF-E)
firmware v1.21
Sigma · Released Jan 24, 2019 · First seen Jul 5, 2026
v1.21 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 support for multiple Sigma lenses including cinema primes, telephoto, zooms, and Art series optics.
- Sigma cinema lenses 28mm T1.5 FF and 40mm T1.5 FF for EF mount now supported
- 500mm F4 DG OS HSM Sports telephoto lens compatibility added
- 24-35mm F2 Art zoom and 18-300mm Contemporary zoom lenses supported
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 500mm F4 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 24-35mm F2 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 28mm F1.4 DG HSM | Art for CANON EF mount.
It has become compatible with the SIGMA CINE LENS FF High Speed Prime Line 28mm T1.5 FF for EF mount and 40mm T1.5 FF for EF mount.
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