Legendary in the world of close-up photography, superior Micro Nikkor performance delivers images of striking clarity while providing reproduction ratios of up to 1:1 without additional accessories. The extra-long focal length of this lens provides the most versatile in working distance. Extra-low Dispersion (ED) glass ensures apochromatic-like performance with high contrast and sharper images. Internal Focusing (IF) improves handling and focusing operation. Focuses from infinity to 19.4 inches (1:1 reproduction ratio). A/M (Automatic/Manual) switch.