VILTROX EF-EOS M Lens Mount Adapter Auto Focus Converter Ring for EF/EF-S series Lens compatible with Canon EOS M Mount Cameras EOS M3 M5 M6 M10 M50 M100Compatibility: VILTROX EF EOS M mount adapter is designed for Canon EOS M mirrorless cameras, such as EOS M M2 M3 M5 M6 M10 M50 M100, it supports all EF and EF S series lenses AF Function : Fast auto focus(AF) speed Electronic contact: You can see the data of shutter, aperture and ISO indicated on camera screen; and control the ctual aperture of lens from the camera side Gold plated needle PIN: metal electronic contact ensure high quality signal