Sigma MOUNT CONVERTER MC-11 (EF-E)
firmware v1.05
Sigma · Released May 17, 2017 · First seen Jul 5, 2026
v1.05 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 compatibility with four Canon-mount lenses
- Compatible with SIGMA 24-105mm F4 DG OS HSM Art
- Compatible with SIGMA 17-70mm F2.8-4 DC MACRO Contemporary
- Compatible with SIGMA 18-200mm F3.5-6.3 DC MACRO Contemporary
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 SIGMA 24-105mm F4 DG OS HSM | Art in Canon mount (firmware version 1.02).It has become compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.03).It has become compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.02).It has become compatible with the SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.01).
Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 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)