Offering long reach with an advanced feature set and optical design, the M.Zuiko Digital ED 40-150mm f/2.8 PRO Lens from OM SYSTEM is a versatile, 80-300mm-equivalent telephoto zoom for Micro Four Thirds mirrorless cameras. As part of the PRO series of advanced lenses, this zoom distinguishes itself with a bright f/2.8 constant maximum aperture for consistent illumination throughout the zoom range to suit working in a variety of lighting conditions. Its optical design makes use of a series of aspherical and low dispersion glass elements to suppress chromatic and spherical aberrations for notable sharpness and clarity, and a ZERO lens coating reduces flare and ghosting for high-contrast, color-accurate imaging.