Rokinon 300M-N 300mm F6.3 Mirror Lens for Nikon Cameras

The Rokinon 300mm f/6.3 ED UMC CS Mirror (Catadioptric) Lens for Nikon Digital SLR Cameras features a 450mm 35mm focal length equivalency and a fast F6.3 aperture in a super compact size and shape that's perfect for nature, sport, surveillance, and celestial photography . Optical construction uses the techniques of refraction and reflection to substantially reduce size and weight. Exceptional image quality and contrast is provided by 8 lenses in 8 groups while Ultra Multi Coating (UMC) of all surfaces reduces ghosting and flare. The filter diameter is 58mm in front and 25.5mm for rear and comes equipped with a front and rear lens caps, and bayonet type reversible for storage lens hood