Lens Adapter B4 2/3" Mount Lens to Canon EF-M Mount mirrorless Camera 5DIII
EF mount such as: 100D/350D/450D/500D/600D/650D/700D/750D/760D. 1D/ 1D Mark II/ 1D Mark III/ 1D Mark IV/ 1Ds/ 1Ds Mark II/ 1Ds Mark III/ 1DX. 5D/ 5D Mark II/ 5D Mark III/ 5DS/ 5DS R/ 6D/ 7D/ 7D Mark II.