The Olympus 72mm ZUIKO PRF-ZD72 PRO Protection Filter V652015BW000 is a clear filter that is specially designed for protecting the lens of your camera. While there is no change in the optical image quality, this filter ensures that the lens is not affected by dust and scratches. Moreover, the thin Zuiko Extra-low Reflection Optical (ZERO) coating helps in reducing the reflections. Designed as a single piece ring that is made of anodized aluminum in matte black, it reduces vignetting when it is used on a wide-angle lens. Added to that, its black coating on the glass edge helps in reducing the reflections.