Professional lens kit with super telephoto zoom lens with filters, adapter ring and teleconverter lens, replacement for Nikon AI mount cameras. Features: Package Included: 420-800mm MF super telephoto zoom lens, UV filter, CPL filter, FLD filter, 2X 420-800mm teleconverter lens and T2-AI adapter ring. Professional photography kit for shutterbugs. Super Telephoto Zoom Lens: The lens features manual focusing in F/8.3-16 aperture at 420-800mm focal length, to separately control the super focal zoom from DSLR SLR cameras. T-Mount to AI-Mount Adapter Ring: T mount lens with adapter ring, replacement for Nikon cameras D850 D810 D800 D750 D700 D610 D300 D3100 D3200 D3300 D3400 D5100 D5200 D5300 D5500 D5600 D7000 D7100 D7200 D7500 D50 D60 D90 Df D3 D3X. MF 2X Teleconverter Lens: Doubles the power of your lens to 1600mm, adopts high definition glass and well made with advance technique, the teleconverter can help to shoot clearer pictures of the distant scenery. Universal 1/4 Mounting: The base with 1/4 screw thread down the lens makes wide application on tripod and monopod, the base with ring can rotate, convenient to install in seconds. Specifications: --Telephoto Zoom Lens Color: Black/ White(optional) Material: Metal Mount: T mount(T2) Replacement for: Nikon D850 D810 D800 D750 D700 D610 D300 D3100 D3200 D3300 D3400 D5100 D5200 D5300 D5500 D5600 D7000 D7100 D7200 D7500 D50 D60 D90 Df D3 D3X Focal Length: 420-800mm zoom lens Aperture: f/8.3@420mm-f/16@800mm Optical Constructions: 4 elements in 2 groups Zoom System: Linear push-pull Exposure: Automatic exposure is available in Aperture Priority mode only for cameras with TTL metering systems; Other camera must be set in full manual Focusing: Manual helical(rotary) operation(Not AF compatible) Minimum Focusing Distance: 1.6 meters(5.25ft) from front lens element Filter Size: 62mm Diameter: 69mm Length: 24-35cm / 9.45-13.38in(with caps) Lens Dimension: 24 * 7 * 7cm / 9.45 * 2.76 * 2.76in --Teleconverter Lens Color: Black Material: Metal and glass Product Size: 5.5 * 5 * 5cm / 2.1 * 1.9 * 1.9inch Product Weight: 77g/ 2.7oz Packing List: 1 * Telephoto Zoom Lens(with Bag and Caps) 1 * UV Filter(with Storage Holder) 1 * CPL Filter(with Storage Holder) 1 * FLD Filter(with Storage Holder) 1 * Teleconverter Lens(with Bag and Caps) 1 * Adapter Ring 2 * Lens Cleaning Cloth