A versatile and compact wide-angle zoom, the M.Zuiko Digital ED 9-18mm f/4-5.6 Lens from Olympus is an 18-36mm equivalent lens for Micro Four Thirds mirrorless cameras. The advanced optical design couples with a retractable lens design to realize a sleek form factor while maintaining consistent sharpness and illumination throughout the zoom range. Two Dual Super Aspherical elements, one aspherical element, and a high refractive index element control spherical aberrations and distortion for notable sharpness and resolution, and one extra-low dispersion element reduces chromatic aberrations throughout the zoom range for high clarity and color accuracy.