Canon EOS M Series EF-M 22mm f/2 STM Wide-Angle Lens Focal Length & Maximum Aperture: 22mm f/2 Lens Construction: 7 elements in 6 groups Diagonal Angle of View: 6330' Focus Adjustment: AF with full-time manual Closest Focusing Distance: 0.49 ft./0.15m Filter Size: 1.7 in./43mm diameter Max. Diameter x Length, Weight: 2.4 x 0.9 in., approx. 3.7 oz. / 60.9 x 23.7mm, approx. 105g