Items included: Sigma 10-20mm f/3.5 EX DC HSM Lens for Nikon F, Lens Case, Lens Hood, Lens Cap, Rear Lens Cap, 3-Piece Filter Kit, Full Cleaning Kit, Lens Cap Keeper, Backpack, 64 GB Memory Card, Card Reader, Card Wallet. Wide-angle zoom designed for DX-format Nikon F-mount cameras, providing a 15-30mm equivalent focal length range.. Constant f/3.5 maximum aperture is suitable for working in available light conditions.. Optical design features two Extra-Low Dispersion (ELD) elements and one Special Low Dispersion (SLD) element to reduce color fringing and chromatic aberrations, with four aspherical elements to limit distortion and spherical aberrations.. Super Multi-Layer Coating minimizes flare and ghosting for improved contrast and color accuracy, while a Hyper Sonic Motor (HSM) ensures quick, quiet autofocus performance with full-time manual focus override.