The AF-S NIKKOR 500mm f/4E FL ED VR is an impressive telephoto designed for Nikon FX-format DSLRs. This lens is also compatible with DX models where it will provide a 750mm equivalent focal length. The sophisticated optical design incorporates two fluorite and three extra-low dispersion elements to control chromatic aberrations and distortions, as well as lessen the overall weight of the lens. A Nano Crystal Coat, along with a Super Integrated Coating, has been applied to lens elements to minimize surface and internal reflections for a marked reduction in lens flare and ghosting. Protecting the advanced optical design is a front fluorine-coated meniscus glass element that, when paired with the weather-resistant magnesium-alloy barrel, supports working in inclement conditions. A Silent Wave Motor AF system produces fast, near-silent focusing performance that suits both stills shooting and movie recording, which can instantly be manually overridden by simply turning the manual focus ring.  It is Compatible with optional AF-S Teleconverter TC-14, TC-17, and TC-20 teleconverters. Additionally, an electromagnetic aperture mechanism is integrated into the lens design to provide greater exposure control stability that is especially beneficial when working with faster continuous shooting rates.