Vivitar 800mm F/8.0 DX Telephoto Mirror Lens + 2x Teleconverter = 1600mm For Nikon 3000, D3100, D3200, D3300, D5000, D5100, D5200, D5300, D5500, D7000, D7100, DF, D3, D3S, D3X, D4, D4s, D40, D40x, D50, D60, D70, D70s, D80, D90, D100, D200, D300, D600, D610, D700, D750, D800, D800E, D810 Digital SLR Camera Ultra-telephoto range in a compact, lightweight form with advanced reflex design The 2x teleconverter effectively doubles the focal length of that lens to 1600mm Super Spectra lens coatings provide even light transmission and minimize flaring...8 elements in 8 groups. Includes: Front Lens Cap, Rear Lens Cap, Lens Hood, Lens Pouch + Bonus T-Mount Ring The Vivitar 800mm f/8 lens is a great asset for any photographer, whether seasoned pro who appreciates its portable size or ambitious amateur exploring the creative potential of ultra-tele photography.