Sigma MOUNT CONVERTER MC-11 (SA-E) firmware v1.01

Sigma · Released May 13, 2016 · First seen Jul 5, 2026

v1.01 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

Fixed LED indication, continuous shooting, OS lens responsiveness, and aperture behavior.

  • LED lamp now works with incompatible lenses
  • Continuous shooting mode operates correctly
  • Aperture returns to fully open as expected

Written from Sigma's release notes, which are printed in full below.

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What's in this update

It has improved the following phenomenon that occurs when lenses that are not compatible with the MC-11 are attached and no light is emitted on the MC-11’s LED lamp.

It does not operate properly on continuous shooti​ng mode.

In the case of some lenses that incorporate an OS function, when the camera’s power is turned off, it does not respond to any operation for a certain period of time.

When open aperture is not selected for shooting, the aperture does not return to fully open.

  • Improvements may not be visible with some products.
  • The phen​omenon that the diaphragm closes when the camera’s power is turned off is due to the characteristic of the camera and is considered to specification.

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Other versions for this product

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