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 Lens Manufacturer Accessories: E-77 II 77mm Lens Cap Lens Dust Cap E (Rear) EW-82 Lens Hood LP1219 Lens Case Bundle Accessories: SanDisk Ultra 32GB SDXC UHS-I Memory Card Speed Pro Series 70" Monopod DSLR Sling Camera Backpack 6pc Graduated Color Filter Set 82mm Wrist / Hand Grip Strap 3 Piece Multi Coated HD Filter Kit 82mm (UV, CPL, FLD) Lens Cap Keeper High Speed SD/SDHC/Micro SD/Card Reader High Quality Lens Cleaning Pen High Quality Dust Blower Starter Cleaning Kit Microfiber Cleaning Cloth