Sigma 12-24mm f/4 DG HSM Art Lens for Nikon Combo DealLens Specs:F-Mount Lens/FX FormatAperture Range: f/4 to 22FLD and Aspherical ElementsSuper Multi-Layer CoatingWhat's In The Box:Sigma 12-24mm f/4 DG HSM Art Lens for Nikon FLens CaseLimited 1-Year WarrantyMore Items Included With Your Purchase:1 x Lens Cap Keeper1 x Camera Backpack1 x Lens Pen1 x Lens Dust Blower1 x Deluxe Lens Cleaning Kit1 x FiberClothSpecial 2 Year Extended Warranty