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