Tokina 12-28mm F/22-4 Body Only Camera Lens, Black (ATXAF128DXC) 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. Aperture Range: f/4-22 Silent Drive-Module AF Motor The new AF "GMR magnetic precision" control sensor is capable of fast auto-focus. Fits Canon APS-C Cameras 19-45mm 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.