The Tokina 10-17mm f/3.5-4.5 AT-X 107 AF NH Lens is a full-framefish-eye lens that gives the photographer a 180 degree field of view with dramatic curvature of field or “fish-eye” effect. This NH version does not include the fixed lens hood, thus allowing for a wider image and increased coverage when mounted to full-frame DSLRs. With this lens an entire vista can be captured, opening up a world of creative possibilities. The front element of the AT-X 107 has a Water Repellent (WR) optical coating on the glass. This advanced coating makes marks such as waterspots or finger-print smudges much easier to clean than a standard multi-coating. The rear optical group of the Tokina 10-17mm AT-X 107 AF NH lens contains 1 SD (Super-Low Dispersion) glass element to reduce the number of elements in the optical design to reduce size, weight and improve focusing speed.