Feature:1. 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.2. 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 camera.3. T-Mount to AI-Mount Adapter Ring: T mount lens with adapter ring, replacement for Sony A900/ A850/ A700/ A580/ A560/ A550/ A500/ A99/ A77 cameras.4. MF 2X Teleconverter Lens: Doubles the power of your lens to 1600mm, adopts high definition and well made with advance technique, the teleconverter can help to shoot clearer pictures of the distant scenery.5. 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.Specification:Professional lens kit with super telephoto zoom lens with filters, adapter ring and teleconverter lens, replacement for Sony AF 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 camera.T-Mount to AF-Mount Adapter Ring:T mount lens with adapter ring, replacement for Sony A900/ A850/ A700/ A580/ A560/ A550/ A500/ A99/ A77 cameras.MF 2X Teleconverter Lens:Doubles the power of your lens to 1600mm, adopts high definition 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 LensColor: Black/ White(optional)Material: MetalMount: T mount(T2)Replacement for: Sony A900/ A850/ A700/ A580/ A560/ A550/ A500/ A99/ A77Focal Length: 420-800mm zoom lensAperture: f/8.3@420mm-f/16@800mmOptical Constructions: 4 elements in 2 groupsZoom System: Linear push-pullExposure: Automatic exposure is available in Aperture Priority mode only for cameras with TTL metering systems; Other camera must be set in full manualFocusing: Manual helical(rotary) operation(Not AF compatible)Minimum Focusing Distance: 1.6 meters(5.25ft) from front lens elementFilter Size: 62mmDiameter: 69mmLength: 24-35cm / 9.45-13.38in(with caps)Lens Dimension: 24 * 7 * 7cm / 9.45 * 2.76 * 2.76in--Teleconverter LensColor: BlackMaterial: Metal andProduct Size: 5.5 * 5 * 5cm / 2.1 * 1.9 * 1.9inchProduct Weight: 77g/ 2.7ozPacking 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 Ring2 * Lens Cleaning ClothPackage 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 Ring2 * Lens Cleaning Cloth