Product Description Ultra slim and compact, the new EF-M 22mm f/2 STM is the EOS M Digital Camera’s moderate wide-angle lens that’s small and light enough to carry everywhere. Its bright f/2.0 lens aperture works well with the EOS M Digital Camera’s large sensor to provide exceptional low-light performance, as well as create beautiful background blur in portraits. An aspheric lens element delivers high resolution and high contrast. For moviemakers, the EF-M 22mm f/2 STM utilizes a built-in stepping motor to provide smooth and quiet continuous autofocus when shooting video with the Canon EOS M Digital Camera. A circular aperture (7 blades) delivers soft-focus backgrounds and a short minimum focusing distance of only 5.9 inches (0.15 meters) allows you to get closer to your subjects. From the Manufacturer Specifications EF-M 22mm f/2 STM Focal Length & Maximum Aperture 22mm, 1:2 Lens Construction 7 elements in 6 groups Diagonal Angle of View 63°30' Focus Adjustment Inner Focusing System Closest Focusing Distance 0.49 ft. / 0.15m Filter Size 43mm Max. Diameter x Length, Weight 2.4 x 0.9 inch, 3.7 oz. / 60.9 x 23.7mm, 105g