This NIKON/NIKKOR 55mm 2.8 Manual is a high-quality lens that is perfect for portrait, full-frame, and standard photography. It has a manual focus type and is compatible with Nikon F mount. The lens has a maximum aperture of f/2.8, which allows for great low-light performance. The exterior of the lens is made of aluminum, and it is compatible with 52mm filter size. This lens is a great addition to any camera enthusiast's collection, and it is sure to impress with its superior performance and excellent image quality.