Sigma MOUNT CONVERTER MC-11 (EF-E)
firmware v1.22
Sigma · Released Feb 21, 2019 · First seen Jul 5, 2026
v1.22 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
Enables compatibility with five Sigma EF-mount lenses with their latest firmware.
- Added support for Contemporary lenses (17-70mm, 18-200mm, 100-400mm)
- Added support for Art lenses (18-35mm, 50-100mm)
- Requires SIGMA Optimization Pro 1.5.0+
Written from Sigma's release notes, which are printed in full below.
Was this useful? Thanks.
What's in this update
It has become compatible with the 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.01.It has become compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.01.It has become compatible with the SIGMA 18-35mm F1.8 DC HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SIGMA 50-100mm F1.8 DC HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.04.
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 for Windows, and ver. 1.5.0 or later for Macintosh.
updatemystuff.com never hosts firmware files — always download from the official source.
Get it from SigmaWatch the MOUNT CONVERTER MC-11 (EF-E) for updates
Create a free account and get an email the moment Sigma publishes new firmware.
Create account & watchOther versions for this product
See the full firmware history for the MOUNT CONVERTER MC-11 (EF-E)