The Canon EF-M 22mm f/2 STM Lens is a moderate wide-angle lens
that's exclusively designed for the EOS M Digital Camera. It features
smooth and continuous AF with a built-in stepping motor, as well as a
seven blade circular aperture. The lens is lightweight and small enough
to carry around with you everywhere. Plus, it has a minimum focusing
distance of 5.9" (15 cm) and a bright f/2 aperture, which affords
exceptional low-light performance.