1.Support EXIF Information Transmitting: The gold-plated contatcs pin design greatly improves conductivity and achieves EXIF ; After connected to the Can0n lens, you can see the relevant parameter, such as , shutter speed, exposure parameters, etc. Transmitting function perfectly makes lens compatible with camera. 2.Support Auto-focus Function: Strong stability, fast, auto focus performance reveals the powerful connection technology, quickly adjust the , shutter, and other settings, perfect control your lens. 3.Electronic Control: Adjust the quickly and effectively by controlling lens connected with mount adapter through the R camera body side, great in use. 4.Support IS Image Stabilization Function: Support lens image stabilization function for lens which effectilvely eliminate image ghosting or blurring caused by motion or camera body shake. 5.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 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. Brand: Model: CM-EF- R Compatible Cameras: For RF-mount cameras Compatible Lenses: For EF/EF-S series lenses Tripod Screw: 1/4 inch thread Camera-mount Diameter: 50mm Lens-mount Outer Diameter: 65mm Material:Aluminum alloy colour:black Package Contents: 1 * CM-EF- R Lens Mount Adapter 1 * Manual (English & Chinese) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.