The Olympus 62mm ZUIKO PRF-ZD62 PRO Protection Filter V652016BW000 is designed to protect the lens without affecting the optical image quality. In addition to that, it helps in reducing the dust and moisture from accumulating on the lens. Moreover, it reduces the unwanted reflections with its special thin Zuiko Extra-low Reflection Optical (ZERO) coating. Designed as one-piece matte black anodized aluminum ring, it reduces vignetting when used on wide-angle lens. Moreover, additional filters or lens caps can be attached to this filter with the use of the front threads provided. The black coating on the edge of the glass helps in reducing the reflections of any stray light as well.