Can achieve multiple functions, such as EXIF information transmitting function, auto focus, electronic aperture control, built-in IS stabilization functions, etc. It will definitely bring more professional shooting experience to you. Features: new Electronic AF Lens Mount Adapter is suitable for Canon EF/EF-S lens to fit for Canon EOS R RF-mount full-frame camera. Support EXIF Information Transmitting: The gold-plated contatcs pin design greatly improves its conductivity and achieves EXIF INFO; After connected to the Can0n lens, you can see the relevant parameter, such as aperture, shutter speed, exposure parameters, etc. Transmitting function perfectly makes lens compatible with camera. Support Auto-focus Function: Strong stability, fast, smooth auto focus performance reveals the powerful connection technology, quickly adjust the aperture, shutter, ISO and other settings, perfect control your lens. Electronic Aperture Control: Adjust the aperture quickly and effectively by controlling lens connected with mount adapter through the EOS R camera body side, great convenience in use. Support IS Image Stabilization Function: Support lens image stabilization function for Canon lens which effectilvely eliminate image ghosting or blurring caused by motion shooting or camera body shake. Gold-plated Contact, Detachable 1/4 Inch Tripod Foot: The lens mount adapter utilizes gold plated electronic contact design which highly enhance the data transmitting performance between lens and camera body. Additionally, the mount lens adapter can be applied flexibly to telephoto lens machanical load bearing for its 1/4 inch detachable tripod foot at the bottom to protect the lens and camera body contacts. Made of Aluminum Alloy, Powerful and Stable: With aluminum alloy material and CNC technology, connect the lens without deformation and bending, it is precise, stable owns top quality. Specifications: Compatible Cameras: For Canon RF-mount cameras Compatible Lenses: For Canon EF/EF-S series lenses Tripod Screw: 1/4 inch thread Camera-mount Diameter: 50mm Lens-mount Outer Diameter: 65mm Item Weight: 175g / 6.2oz Package Size: 11 * 9.8 * 5.7cm / 4.3 * 3.9 * 2.2inch Package Weight: 235g / 8.3oz Package List: 1 * Lens Mount Adapter 1 * User Manual (English & Chinese)