Olympus M.Zuiko Digital ED 8-25mm f/4 PRO Lens
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. Additionally, a Movie & Still Compatible autofocus system achieves fast, smooth, and silent focusing performance, and a manual focus clutch affords instant switching between focusing methods. Constant f/4 maximum aperture enables consistent low-light performance and selective focus control throughout the zoom range. The lens construction integrates one DSA (Dual Super Aspherical) element, one ED (extra-low dispersion) element, two aspherical ED elements, one Super ED element, one HR (high-refractive index) element, one Super HR element, and one HD element elements into its design