Canon camera mounts and change. Canon FD, EF, EF-S, EF-M and RF
The First Canon Lenses You Should Buy | Reviews by Wirecutter
Amazon.com : Commlite CM-EF-EOS M Auto-Focus Lens Mount Adapter for EF/EF-S Lens to Canon EOS M (EF-M Mount) Mirrorless Camera Lens Converter Ring for Canon EOS M1 M2 M3 M5 M6 M10
Canon camera mounts and change. Canon FD, EF, EF-S, EF-M and RF