Sigma MOUNT CONVERTER MC-11 (EF-E) firmware `v1.39`

Sigma · Released Oct 21, 2021 · First seen Jul 5, 2026

v1.39 is not the latest firmware for the Sigma MOUNT CONVERTER MC-11 (EF-E): the current version is v1.43 (August 27, 2026). Go to v1.43

What's in this update

It makes the converter compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver2.03.

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Other versions for this product

v1.43
v1.42
v1.41
v1.40
v1.38
v1.37
v1.36
v1.35

See the full firmware history for the MOUNT CONVERTER MC-11 (EF-E)