The Nikon Telephoto Micro-Nikkor 105mm f/2.8 AIS Manual Focus Lens is a manual focus short telephoto lens that will produce superb images whether used for macro photography (up to 1:2 reproduction ratio, 1:1 with an optional adapter), or for general photography, such as portraits.1:2 reproduction ratio (1:1 with optional PN-11 adapter)Manual focus