Item Type: Manual Focus Telephoto Lens Material: Alloy, Optical Glass Weight: Approx. 1753g / 61.8oz Lens Structure: 4 Elements and 4 Groups Focal Length: 500mm / 19.7in Minimum Focus Distance: 5m / 16.4ft Aperture: F6.3-F32 Front Filter Diameter: 86mm / 3.4in Package List 1 x Manual Focus Telephoto Lens 2 x Lens Cap 1 x Adapter Ring 1 x Wrench 1 x Carrying Bag 1 x User Manual 1Alloy and Optical Glass: 4 group 4 elements optical structure with multi coated coating to suppress lens flare and ghosting, enhancing contrast and color accuracy. Alloy body, strong texture, fine craftsmanship. 2Clear: Utilizes accurate achromatic refractor design for high peak contrast and well controlled flares, allowing you to use the lens in M manual exposure mode. 3500mm f/6.3 Achromatic Refractor Telephoto Lens: Ideal for bird and wildlife photography as well as long distance shooting. 4Compatibility: Compatible for Nikon Z mirrorless cameras when used with the included T2 Z mount adapter. Includes a small tripod mount and a detachable lens hood, which helps to minimize lens glare and ghosting to the maximum extent. The rotatable tripod mount provides optimal balance and allows for quick and easy vertical format shooting. 5Accurate: Manual focus design combined with depth of field and distance markings, facilitating the use of pre focusing techniques to achieve sharp, clear images.