The high-class filters of the Pro Edition series meet the highest demands of professional photographers. The types of glass used and the precision processing ensure crystal-clear image reproduction across the entire focal length range. They do not affect the optical system in any way, which is extremely important for image sharpness. Thus, they guarantee optical excellence for both digital and analog photography. The slim frames prevent vignetting in the corners of the image. Nevertheless, they offer a front thread for a lens hood or lens cap. All Pro Edition filters are delivered in a practical and robust transport case.