【Compatibility】Compatible with Canon EF/EF-S series lenses to Panasonic and Olympus Micro 4/3 Cameras（Please see the compatibility table for specific models）. Please contact us if you're not sure whether this adapter ring fits for your camera or lens 【Autofocus & Aperture Control】Supports Autofocus, Interior built-in aperture motor and an electronic contact; aperture of the lens controlled by means of an electronic contact,aperture of the lens controlled by means of an electronic contact; aperture can be adjusted directly from the camera side to control the actual aperture of the lens 【IS Stabilization】support the IS function, making focus more accurate and clear and better help you to take pictures 【Weather Sealing】Dust- and water-resistant 【Structure】Full metal body, Designed with 1/4 screws at the bottom; Detachable tripod base MFT Lens Mount Adapter for Canon EF/EF-S Lens to Panasonic and Olympus Micro M4/3 Cameras