Bundle Items Include: 1 x Canon EF 17-40mm f/4L USM Lens, 1 x 77mm 3 Piece Filter Kit, 1 x Pro Sling Backpack, 1 x SanDisk 64GB Ultra SDXC Memory Card, 1 x Memory Card Reader, 1 x 12_inch Flexible Tripod, 1 x Memory Card Wallet, 1 x Lens Cap Keeper, 1 x Cleaning Kit, 1 x Hand Strap. Spanning a versatile wide-angle range, the EF 17-40mm f/4L USM Lens is a Canon L-series zoom featuring a constant f/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting.. Wide-angle zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 27.2-64mm equivalent focal length range. Constant f/4 maximum aperture maintains consistent illumination