Tokina ATXAF128DXN 12.28mm f/4.0 Pro DX Lens for Nikon Manufacturers 3 Year Limited USA Warranty card is included in the box. For all repairs, USA warranty card and an authorized USA retailer's sales receipt must be sent together. A new optical design using a spherical elements and super-low dispersion glass. The new AF "GMR magnetic precision" control sensor is capable of fast auto-focus. Fits Nikon DX Cameras 18-42mm Equivalency in 35mm Format The lens has a 77mm filter size allowing filters such as the Hoya HD2 low-profile circular polarizer or UV to be used.