This is a HOYA PRO1Digital CPL filter. This is 77mm. Made in Japan with peace of mind by Tokina Co.Ltd. Light rays reflected from any surface can become polarized, so a polarizing filter is used to select the light rays entering the camera lens. A circular PL filter can remove unwanted reflections from non-metallic surfaces such as water and glass. It also makes colors appear more saturated, with higher contrast and clarity. This effect is often used to enhance the contrast and saturation of blue skies and white clouds. Hoya's polarizing filters do not affect the overall color balance of your shots. Digital Multi-Coated Digital Multi-Coated filters significantly reduce the appearance of lens flare and ghosting caused by reflections. Black Anodized Frame The filter features a matte black aluminum satin-finished anodized frame that reduces reflections. Black Rimmed Glass These filters are equipped with black rimmed glass to reduce the possibility of light reflecting off the edges. Low Profile Frame The ultra-thin filter frame, which helps avoid vignetting on ultra-wide-angle lenses, is also designed to hold lens caps. Knurled Edge Frame These filters are equipped with straight knurled edges for a non-slip, easy-to-mount and remove grip. UV Protective Case The filter case is UV protected to further extend the life of the filter. Can be used with all SLR and mirrorless cameras, including Canon, Nikon, Sony, Panasonic, Pentax, and Olympus. Please check the filter diameter before purchasing. Kenko Pro1D CPL Kenko Tokina Usually ships in 1-3 days, but due to business trips for procurement, there may be periods when shipping is not possible for about 5 days, so it may take up to 5-7 days. If you are in a hurry, please check before ordering.