The Canon EF-M 22mm f/2 STM Lens provides a 35mm equivalent focal length of 35.2mm and features smooth and continuous AF with a built-in stepping motor, as well as a 7-blade diaphragm for pleasing out of focus areas. Bright f/2 aperture works well with the EOS M camera’s large sensor to provide exceptional low-light performance. For movie-makers, the built-in stepping motor affords smooth and quiet continuous autofocus. The lens has a minimum focusing distance of just 5.9″ (15 cm) and a bright f/2 aperture, which affords exceptional low-light performance. The seven-blade circular aperture delivers soft-focus backgrounds and a short minimum focusing distance of only 5.9″ (15 cm), which allows you to get closer to your subjects. Aspherical lens elements reduce chromatic aberrations, and Super Spectra coatings help ensure accurate color balance and high contrast while suppressing flare and ghosting