(From Olympus lens literature) When you need wide angle lenses with great performance and fast apertures, Zuiko Digital Wide Zoom lenses can deliver. The superb optics are designed specifically for digital photography – delivering the highest image quality – with their design highlighted by two aspherical glass lens elements that help prevent aberrations and distortions. These elements combine with new multi-coating on the first two lenses, which contributes to the removal of ghost or glare that can occur with a wide-angle lens, so clarity of images is obtained at all distances. Floating focusing system results in close focusing distance of 0.28m (11.02 inches) for close-up macro shots. Ideal for professional use.