Commlite CM-EF-MFT Electronic Aperture Control Lens Mount Adapter for Canon EF & EF-S to Olympus PEN E-P1 P2/3/5 E-PL1 OM-D E-M5 Panasonic LUMIX GH2/3/4 M4/3 Camera EXIF signal transmitting and being displayed on Camera Screen. Aperture can be controlled and adjusted from Camera. Built-in IS function. Aluminum Alloy made, powerful and stable. Gold-plating contact, excellent transmitting effect.