The adapter allows to use Canon EF lenses and supports both phase-detect and contrast-detect AF systems as well as the ability to control the aperture from the camera body.

Smooth iris effects are possible as well on select lenses and 5-axis stabilization is available thanks to communication of distance information with supported lenses.

It features a programmable function button, enables electronic (focus-by-wire) manual focusing, transmits Exif data to the camera, and works with in-lens image stabilization.