MOUNT CONVERTER MC-11 (EF-E) firmware v1.20
Sigma · Released Nov 29, 2018 · First seen by GearPulse Jul 5, 2026
What's in this update
It has become compatible with the SIGMA 70-200mm F2.8 DG OS HSM | Sports. Note: Before updating the SIGMA MOUNT CONVERTER 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.
GearPulse never hosts firmware files — always download from the official source.
Get it from Sigma →