EF-EOS M Mount Adapter is designed for Canon EF lens to Canon mirrorless camera By adapter mounting it can achieve functions of auto focus and adjustable apertureEFEOS M2 Mount Adapter is designed for EF lens to be used onCanon mirrorless camera, compatible with the drive system ofCanon lens. It can support lens AF function with metal contacts. Covering a wide range of focal lengths, it is suitable for a variety of shooting scenes and achieves professional imaging findings.