The Commlite Lens Mount Adapter AEF-MFT Booster allows you to use an EF lens on a Micro 4/3 Sensor Camera, and also features functions like USB Firmware Upgrading; 0.71x Focal Reducer Booster; EXIF Info. Transmitting; Support Auto Focus Function; Electronic Aperture Control; Built-in IS Stabilization Function; Gold-plated Contact Pins, etc. Supports AF Function Commlite CM-AEF-MFT lens adapter utilizes the lens’ Gold-Plating Contact, which can help to connect your EF/EF-S Lens to M4/3 Camera, and enables AF. Supports EXIF Transmitting & Electronic Aperture Control Commlite CM-AEF-MFT adapter supports the ‘Aperture Control’ which allows you to digitally control the lens’ aperture from the Camera. Supports IS Stabilization Commlite CM-AEF-MFT lens mount adapter fully supports the IS function from the EF lenses. Powerful and Stable The adapter housing is made of aluminum alloy which makes it more stable and durable. The1/4 standard thread at the bottom allows the adapter to be mounted to a Stratus cage frame to give it extra support. It can also be connected to a tripod and other supports. Please Note: Continuous autofocus（AF-C） function is not available in video mode. Model: CM-AEF-MFT-BOOSTER Compatible with EF Series Lens to Micro 4/3 Mount Cameras 0.71x Focal Reducer/Speed Booster Auto Focus Function & Aperture Control EXIF Signal Transmitting & IS Function USB Port For Firmware Update