Viltrox Mount Adapter for Canon EOS M, EOS M2 Compact System Digital Camera and Canon EF, EF-S Lenses (Replacement for Canon EF-EOS M Mount Adapter) EF-M adapter is able to adapt EF/EF-M lens to Canon EOS M mirrorless Camera, which allows you to have more purchasing choices of lens. Maintain of Auto Focus (AF) function. Aperture exactly being aligned via the mount adapter. Built in anti-shaking function. More robust and stronger due to zinc alloy core. Greatest conductivity due to gold-plated pins for the signal transmitting. Body and rear lens caps are included to protect adapter. 1/4 Female thread screw for mounting onto the tripod.