Canon EF-M mount

The Canon EF-M lens mount was introduced in 2012 as a derivative of the Canon EF lens mount for Canon mirrorless interchangeable lens of the M-series that have APS-C sized sensor. (about 1.6 crop format with respect to full frame / 35 mm). The distance to the sensor (flange distance) is much shorter than the other Canon mounts, typical for a mirrorless design.

EF-S and EF lenses can be used on EF-M mount cameras with a specific adapter.