The Olympus M.Zuiko 60mm f/2.8 ED Macro Lens features a closest focusing distance of 7.4 inches 1x magnification and dust/splash-proof construction. It incorporates 13 lens elements in 10 groups with ED HR and E-HR elements to eliminate chromatic aberrations. It also incorporates Olympus exclusive MSC (Movie & Still Compatible) mechanism which is based on a floating-type inner focusing system with three drive systems resulting in no change in the overall lens length during autofocusing.