Canon U.S.A., Inc. | From Zoom to Macro | EF-M Lenses ...
EF-M* lenses are compact, lightweight and made just for EOS M series digital cameras. ... Ultra slim and compact, the EF-M 22mm f/2 STM has a bright f/2.0 lens aperture that delivers exceptional low-light performance, ... The optional Mount Adapter EF-EOS M allows Canon EF and EF-S lenses to be mounted on Canon EOS M series digital cameras.