Venus Laowa 60mm F/2.8 Ultra Macro Manual Focus Lens - for Nikon F Mount World's First Macro Lens with 2:1 magnification and infinity focus Magnification range from 0.1X to 2X without installing extension tube Capable to focus at infinity and serves as a normal 60mm lens 9 elements in 7 groups patented optical structure 14 pieces of aperture blades