Canon EF 24-70mm f/4L IS USM Lens

Features EF-Mount Lens/Full-Frame Format Aperture Range: f/4 to f/22 Two Aspherical and Two UD Elements Super Spectra Coating Ring-Type Ultrasonic Motor AF System Optical Image Stabilizer Macro Position with 0.7x Magnification Weather-Sealed Design, Fluorine Coating Rounded 9-Blade Diaphragm The EF 24-70mm f/4L IS USM is a Canon L-series lens covering wide-angle to short telephoto focal lengths and featuring a constant f/4 maximum aperture. An advanced optical layout comprises two ultra-low dispersion elements and two aspherical elements to minimize a variety of aberrations and distortion in order to realize notable sharpness and clarity. A Super Spectra coating has also been applied to suppress lens flare and ghosting for greater contrast and color accuracy. Complementing the optical performance, the lens is also characterized by its ring-type USM and internal focusing mechanism to enable quick, quiet, and precise autofocus performance along with full-time manual focus overri