MOUNT CONVERTER MC-11 (EF-E) firmware v1.38
Sigma · Released Jul 8, 2021 · First seen by GearPulse Jul 5, 2026
What's in this update
It makes the converter compatible with the SIGMA 500mm F4 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.2.03. ※Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro
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