Item Type: 500mm F6.3 Manual Focus Telephoto Lens Weight: 1685g/59.4 Material: Alloy and optical glass Lens Structure: 4 elements and 4 groups Focal Length: 500mm Nearest Focusing Distance: 5m/16.4ft Aperture: F6.3-F32 Front Filter Diameter: 86mm Package List 1 x Lens 2 x Lens Cap 1 x Adapter Ring 1 x Wrench 1 x Storage Bag 1 x Instructions 1Optical Design: 4 groups of 4 elements of optical structure, multi layer MC coating can suppress lens spot and ghost, improve contrast and color authenticity. 2Lens Type: A accuracy achromatic refractor design for nice peak contrast and flare control images. You can use this lens in "M "manual exposure mode. 3500mm F 6.3 Achromatic Refraction Telephoto Lens: The 500mm F 6.3 ultra long fixed focus lens is a nice choice for bird and wildlife photography as well as ultra long distance shooting. 4Manual Focus Design: Accuracy scale, manual focus design supplemented by depth of field and distance scale, easy to use pre focus technology to provide sharp, clear images. 5Compatibility: When used with the included T2 port adapter ring, suitable for EF bayonet lens. Excellent grade alloy body, strong texture, beautiful appearance, fine process. 6Physical Design: Includes a tripod mount and removable lens hood that helps minimize lens flare and ghosting. Rotatable tripod mount provides optimal balance and allows for quick and easy vertical format shooting when rotated.