Viltrox EF-M2 II Auto Focus Adapter Speed Booster para Canon EF Lens a MFT M4/3
1 x Viltrox EF-M2 Adapter. Plus 0.71 based on the original focal length (equivalent focal length=focal length x0.71), which help enlarge 1 level aperture. Canon EF series lenses. Canon EF or EF-S lenses.