Designed specifically for Canon cinema lenses, the Fotodiox Pro Fusion Smart AF Cine Edition Lens Adapter allows you to make full use of your Canon EF cinema lenses on select L-mount cameras, while retaining autofocus, electronic aperture control and EXIF data. Featuring FUSION technology, this intelligent adapter features electronic contacts that fully maintain autofocus, auto-exposure, and image stabilization capabilities as well as transfer Exif data and enable aperture adjustment from the camera body. A micro-USB port is used to update the adapter's firmware for future lens support and bug fixes. Complementing the electronic sophistication, this adapter is also characterized by its durable chrome-plated brass construction and removable 1/4"-20 tripod mount to help support heavier lenses.