Featuring the latest advances in optical lens design, it utilizes 1 Super UD lens element and 2 UD lens elements that help minimize chromatic aberration in the periphery at wide-angle as well as reduced color blurring around the edges of the subject. In addition, 2 types of aspherical lenses are combined to help reduce spherical aberration over the entire image area as well as through the full zoom range. Optimized lens coatings also help ensure exceptional color balance while minimizing ghosting. The lens is also equipped with a circular 9-blade diaphragm for beautiful, soft backgrounds. A ring-type USM and high-speed CPU with optimized AF algorithms enable silent and fast autofocusing. Built for the rigors of professional use as well as to meet the increased number of shots available with digital photography, it’s constructed with improved dust sealing and water resistance while fluorine coatings on the front and rear lens surfaces help reduce soiling, smears and fingerprints. A zoom lock lever locks the zoom position at the wide end for safe transporting while attached to an EOS DSLR camera over the shoulder.
24-70Mm focal length, 38.4-112Mm equivalent focal length on canon aps-c cameras;F2.8 Constant maximum aperture;F22 minimum, ring-type ultrasonic-type af motor with full-time manual focusing;82Mm filters, closest focusing distance: 0.38M/1.25 Ft;Image stabilization: no; Purchase this product between may 1, 2016 and july 30, 2016 and get 13 months of free damage protection from canon. The product must be registered within 30 days of the purchase date to be eligible