Micro-Nikkor 105mm f/4 is a special telephoto lens designed for close-up photography at high reproduction ratios. Offering identical optical construction as the Bellows-Nikkor 105mm f/4, but with a unique focusing helicoid that enables operation from infinity to a reproduction ratio of 1:2 without the need for any adapters. The lens features automatic maximum aperture indexing (AI) with suitably equipped cameras, through the meter coupling ridge provided. Fitted with meter coupling shoe to enable Nikon cameras that lack the AI facility to still offer full exposure measurement. The lens exhibits excellent flatness of field and distortion free images at all reproduction ratios. Its Nikon Integrated Coating further improves performance by maximizing image contrast, while reducing flare and ghost for the stunning color reproduction.