Aputure DEC Wireless Focus & Aperture Controller Lens Adapter for EF and EF-S-Mount Lenses to MFT-Mount CamerasThe Aputure DEC Wireless Focus & Aperture Controller Adapter for EF and EF S Mount Lenses to MFT Mount Cameras is a wireless remote adapter controller that allows you to mount your EF EF S mount lens on your MFT mount camera and control your lens directly, allowing you to smoothly control the focus and iris setting of your lens without relying on your camera's electronics. OLED windows on the adapter and the remote hand grip display lens information.