Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens - The Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens is a wide-angle zoom lens designed specifically for EOS APS-C DSLRs, where it provides a 35mm-equivalent focal length range of 16-28.8mm. The optical design incorporates one aspherical element, one UD (Ultra-low dispersion) element, and one large-diameter element to minimize chromatic aberrations throughout the zoom range and contribute to notable image sharpness and clarity. Enhanced lens coatings have also been applied to lens elements to minimize lens flare and ghosting for maintained image contrast and color neutrality.