Item Type: Prime Telephoto Lens Material: Alloy + optical glass Lens Construction: 4 optical structures in 4 groups Focal Length: Approx. 500mm/19.69in Minimum Focusing Distance: Approx. 5m/16.40ft Aperture: F6.3-F32 Front Filter Caliber: Approx. 86mm/3.39in Package List 1 x Prime Telephoto Lens 2 x Lens Cap 1 x Adapter Ring 1 x Wrench 1 x Storage Bag 1 x Instruction Manual 1Optical Design: 4 optical structures in 4 groups, multi layer MC coating can suppress lens spot and ghosting, improve contrast and color realism. 2Good Image Present manual exposure mode for images with well controlled peak contrast and flare. 3Telephoto Use: The 500mm f/6.3 ultra long fixed focus lens is a telephoto lens that can effectively eliminate chromatic refraction, good for shooting birds and wildlife, as well as ultra long range shooting. 4Compatibility: When used with the included T2 NEX mount adapter, the prime telephoto lens can be used with specific full frame mirrorless cameras. 5Accurate Scale: The manual focus design is complemented by a depth of field and distance scale for easy use of prefocus technology to deliver sharp, sharp images.