Aputure DEC Lens Regain &ndash; Wireless Follow Focus Lens Adapter for Canon EF now with Focal Reducer Designed for MFT Mount Cameras and Canon EF Lenses Increase an Additional Stop of Light, T-Stop Display DEC LensRegain is a wireless remote adapter with focal reducer that allows you to attach Canon EF-mount lenses to MFT mount cameras. DEC LensRegain helps you to expand the possibilities of Canon EF-mount lenses when you capture video with cine style camera. The equipped 0.75x focal reducer enable you to get a wider field of view.