Tokina 11-16mm f/2.8 AT-X116 Pro DX II Digital Zoom Lens (AF-S Motor) (for Nikon) USA Version. 3 Year Tokina Warranty included. Intended for sale within the USA. Aperture Range: f/2.8 to f/22 Designed for Cameras with APS-C Sensors Two Aspheric Lens Elements Two Super-Low Dispersion Lens Elements Multi-Layer Coating 77mm Filter Thread