Olympus M.Zuiko Digital ED 8-25mm f/4.0 ProA dynamic wide angle zoom, the M. Zuiko Digital ED 8 25mm f 4 PRO from Olympus is an ultra wide Micro Four Thirds zoom lens with the equivalent full frame format zoom range of 16 50mm. Its sophisticated optical design, which includes a variety of aspherical, low dispersion, and high refractive index elements, reduces both chromatic and spherical aberrations throughout the zoom range for notable clarity, sharpness, and color accuracy. A ZERO lens