Nikon AF-S DX Micro-NIKKOR 40mm f/2.8G Close-up Lens for Nikon DSLR Cameras Compact and lightweight DX-format close-up lens. Lens Construction (Elements/Groups) - 9 elements in 7 groups Maximum reproduction ratio is 1.0x. Focal length is 40 mm Sharp images from infinity to life-size (1X), Autofocus to 64 inches Close-Range Correction System (CRC). Silent Wave Motor (SWM) Angle of view is 38 degree 50 feet. Features focus distance indicator 0.53 feet to infinity having minimum focus distance as 0.53 feet Lens not zoomable