Sigma MOUNT CONVERTER MC-11 (EF-E)
firmware v1.27
Sigma · Released Nov 22, 2019 · First seen Jul 5, 2026
v1.27 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 four EF-mount telephoto and prime lenses
- Supports 60-600mm and 70-200mm telephoto lenses
- Supports 150-600mm telephoto and 50mm prime lenses
- Requires SIGMA Optimization Pro 1.5.0 or later before updating
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 60-600mm F4.5-6.3 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.1.02.It has become compatible with the SIGMA 70-200mm F2.8 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.1.01.It has become compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SIGMA 50mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.
Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.
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