- Canon s EF 24mm f 2.8 IS USM Autofocus Lens is a compact wide-angle 24mm lens thatgives you superb image quality and smooth silent operation. It s equipped with Canon s Optical ImageStabilizer that provides up to 4 stops of shake correction--ideal for working in low light. A ring-type USM and advanced CPU with optimized AF algorithms for fast auto focusing make for a nimble ...