Canon EF-S 24mm f/2.8 STM Lens

EF-S Mount Lens/APS-C Format 38mm (35mm Equivalent) One Aspherical Element Optimized Lens Coatings STM AF Motor Supports Movie Servo AF Micro-Stepping Drive Aperture Mechanism Full-Time Manual Focus Override Rounded 7-Blade Diaphragm Slim Design Measures Less Than 1-Thick

Wide-angle lens for Canon APS-C cameras (equivalent to 38mm on a full-frame camera)
Focal Length & Maximum Aperture: 24mm 1:2.8, Minimum focusing distance of 0.5 ft./0.16 m; maximum magnification of x0.27
Slimmest and lightest lens of the EF-S series
Circular aperture (7 blades) delivers beautiful, soft backgrounds
Full-time manual focus allows manual focus adjustment while in One Shot AF mode