Bright f2.8 Aperture 60mm Single Focal Length This high-quality dust and splash-proof macro lens features a 7.4-inch minimum focusing distance at 1:1 life-size magnification. The M.Zuiko Digital ED 60mm f2.8 Macro has an MSC mechanism and an internal focusing system that won’t change the length of the lens when focusing, which is critical at close working distances. ZERO (Zuiko Extra-low Reflection Optical) coating High-Speed Imager AF (MSC) Focus limit switch speeds up auto focus, Built-in working distance window for subject distance confirmation 13 separate lens elements in 10 groups assures faithful reproduction of finest details 1x 35mm equivalent maximum magnification