TOKYOGRAPHER OPF 550-S 67mm Purchased about three months ago. It hasn't been used much, so it's clean with no noticeable scratches. ※ Official quote The OPF (Optical Preset Filter) is a new type of optical filter for camera lenses that can add the glare of light outside the viewfinder captured by the camera, and the colors of the air that change depending on the angle and intensity of the light, to your photos. The "550" in OPF 550-S represents the wavelength of light, 550 nanometers, which vividly captures green and blue colors, and the "S" (Soft) represents the amount of light diffusion by special glass. By combining these two elements, it enables new expressions that have never been possible before.