MOUNT CONVERTER MC-11 (EF-E) firmware v1.09
Sigma · Released Aug 4, 2017 · First seen by GearPulse Jul 5, 2026
What's in this update
It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON (ver. 1.02). 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.
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