Covering a useful wide-angle focal length range, the EF 16-35mm f/4L IS USM is a Canon L-series lens distinguished by its constant f/4 maximum aperture, sophisticated optical design, and use of image stabilization to realize sharp imagery. Two ultra-low dispersion elements are used to greatly reduce color fringing and chromatic aberrations throughout the zoom range for high clarity and color accuracy, and a Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast. Three aspherical elements are also featured and help to control distortion and minimize spherical aberrations for improved sharpness.Included:Canon EF 16-35mm f/4L IS USM LensManufacturer Accessories:E-77 II 77mm Lens CapLens Dust Cap E (Rear)EW-82 Lens HoodLP1219 Lens CaseBundle Accessories: SanDisk Ultra 32GB SDXC UHS-I Memory Card SpeedPro Series 70″ MonopodDSLR Sling Camera Backpack6pc Graduated Color Filter Set 82mmWrist / Hand Grip Strap3 Piece Multi Coated HD Filter Kit 82mm (UV, CPL, FLD)Lens Cap KeeperHigh Speed SD/SDHC/Micro SD/Card ReaderHigh Quality Lens Cleaning PenHigh Quality Dust BlowerStarter Cleaning KitMicrofiber Cleaning Cloth