Item Type: Fixed Focus Telephoto Lens Material: Alloy, Optical Glass Weight: Approx. 1671g / 58.9oz Lens Structure: 4 Element, 4 Group Focal Length: 500mm / 19.7in Nearest Focusing Distance: 5m / 16.4ft Aperture: F6.3-F32 Front Filter Aperture: 86mm / 3.4in Package List 1 x Lens 2 x Lens Cap 1 x Adapter Ring 1 x Wrench 1 x Storage Bag 1 x Instruction Manuals 1Optical Design: 4 group, 4 chip optical structure with multi layer MC coating suppresses lens spotting and ghosting, improving contrast and color fidelity. 2Lens Type: Designed with an achromatic refractor for images with good peak contrast and flare control. You can use this lens in "M" manual exposure mode. 3500mm F/6.3 Telephoto Lens: The 500mm F/6.3 super long fixed focus lens is a great choice for bird and wildlife photography as well as super long distance shots. 4Compatibility: When used with the included T2 NEX port adapter ring, it can be used with half frame microscan cameras. 5Physical Design: Also includes a tripod mount and removable lens hood that helps minimize lens flare and ghosting. The rotatable tripod mount provides optimal balance and allows for quick and easy vertical format shooting when rotated. 6Accurate Scale: The manual focus design is complemented by depth of field and distance scales, making it easy to use pre focus technology to deliver clear images. 7Material: Alloy body, strong texture, exquisite appearance, fine craftsmanship, match it with your photographic equipment more stylish.