Sigma MOUNT CONVERTER MC-11 (SA-E)
firmware v1.06
Sigma · Released Jul 20, 2017 · First seen Jul 5, 2026
v1.06 is not the latest firmware for the Sigma MOUNT CONVERTER MC-11 (SA-E): the current version is v1.28 (August 27, 2026). Go to v1.28
In short — summary by updatemystuff.com
Fixes autofocus failure when attaching certain non-compatible lenses.
- Autofocus malfunction with certain incompatible lenses corrected
Written from Sigma's release notes, which are printed in full below.
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What's in this update
It corrects the phenomenon that AF does not operate properly when some lenses that are not compatible with the MC-11 are attached.
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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Create account & watchChanged since v1.05
- It corrects the phenomenon that AF does not operate properly when some lenses that are not compatible with the MC-11 are attached.
Other versions for this product
See the full firmware history for the MOUNT CONVERTER MC-11 (SA-E)