Thanks to the 1.6x crop factor of APS-C format EOS M bodies, the 22mm focal length of this lens equates to 35.2mm in fullframe terms. It gives the same 63-degree viewing angle as using a 35mm lens on a full-frame camera, perfect for everyday photography. Despite having a fast f/2 aperture rating, the ‘pancake’ design enables it to be the smallest and most lightweight lens in the group.
Given the slick build of EOS M bodies, the camera and lens combination is quite stealthy, especially when composing on the rear screen. The STM (Stepping Motor) autofocus system is quick and quiet, and manual focusing benefits from an optional focus peaking display, featured in all current EOS M cameras.