100-400mm F5-6.3 DG OS HSM | Contemporary (Canon EF mount) firmware v1.02
Sigma · Released Aug 4, 2017 · First seen by GearPulse Jul 5, 2026
What's in this update
It has corrected the phenomenon that the OS mechanism does not operate properly when attached to the SIGMA MOUNT CONVERTER MC-11 EF-E.
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