This complicated optical formula creates outstanding image quality throughout the focal range, and even at the widest of apertures. An updated AF algorithm makes for smooth, accurate and fast autofocusing while multi layer coating control flare and ghosting. The Sigma 24-35mm F2 DG HSM Art is another notch on Sigma"s belt for pure photographic innovation. Covering a common prime lens lineup, the 24-35mm F2 DG HSM was designed for prime performance with the versatility of a zoom lens. A large diameter aspherical lens, a complicated element to manufacture, allows for a stunning level of brightness The Sigma 24-35mm F2 DG HSM Art is the worlds first full frame F2 zoom lens This Ritz Camera Bundle Includes: Sigma 24-35mm F.2 DG HSM Standard Zoom Lens (Canon EF Cameras) Lexar Professional 633x 64GB SDXC UHS-I/U3 Card (Up to 95MB/s Read) w/Image Rescue 5 Software - LSD64GCBNL633 Polaroid Optics 82mm 3 Piece Filter Set (UV, CPL, FLD) Ritz GearTM Large Neoprene Protective Pouch for DSLR Camera Lenses Ritz GearTM Premium 8-IN-1 Cleaning Kit For Cameras, Camcorders, SLRs, Lenses & Filters Ritz GearTM OTG USB / Micro USB Multi-Function SD / MICRO SD Card Reader / Writer For PC, Tablet and Smartphones