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Black cylindrical lens adapter with silver electronic contacts and LED indicator window

SIGMA

SIGMA MC-11 Mount Converter Canon EF to Sony E

SKU CH-A7QT-PQ9AS

Converts Canon EF lenses to Sony E-mount with autofocus, aperture control and stabilisation support

  • Part type or numberTeleconverters
  • Lens mountCanon EF
  • Product typeFixed Length Lens
  • Product colorBlack
  • Compatible withCanon EOS
  • DetailsUpdatable with Sigma's (optional) USB docking station
  • Converts Canon EF lenses to Sony E-mount bodies
  • Electronic communication enables autofocus and aperture control
  • LED display confirms lens compatibility at a glance
  • Firmware updatable via Sigma USB docking station
  • Interior flocking reduces internal reflections for cleaner images

Mount Converter Canon EF to Sony E

The Sigma MC-11 Mount Converter lets photographers attach Canon EF-mount lenses to Sony E-mount camera bodies. It maintains electronic communication for autofocus, aperture control and exposure metering. The adapter supports both in-camera and in-lens stabilization systems. It is built for professionals and enthusiasts who want to use existing glass on Sony mirrorless cameras.

LED display and firmware updates

An integrated LED display shows whether a mounted lens will work with the converter before shooting. Firmware can be updated using Sigma's optional USB docking station to add compatibility or improve performance. Interior flocking reduces internal reflections that could degrade image quality. These features turn a simple mechanical adapter into an active electronic bridge.

Check lens compatibility before ordering

Not every Canon EF lens functions fully with the MC-11; autofocus speed and stabilization behavior vary by lens model. Verify that your specific lenses are on Sigma's published compatibility list for the converter. The optional USB docking station is required for firmware updates and is sold separately. Buyers who need guaranteed native performance with unsupported lenses should research alternatives.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $224.99
Cheaper than about 82% of the 2,570 comparable items (median $546.49).

Specifications

Product
Brand nameSIGMA
Model name89E965
Part type or numberTeleconverters
Product typeFixed Length Lens
Product colorBlack
Audio & video
Lens mountCanon EF
Compatibility
Compatible withCanon EOS

Questions about this item

Will the firmware on the MC-11 converter need updating for new lenses?

Firmware can be updated through Sigma's optional USB docking station to maintain compatibility with newer lenses.

Which function stops working first when shooting continuously with adapted lenses?

Autofocus speed and stabilization performance may degrade before other functions during extended continuous shooting.

Does the adapter itself generate noticeable heat during all-day use?

The passive electronic design produces minimal heat; any warmth comes from the attached lens and camera body during prolonged operation.

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