Hoya YKITDG058 58mm Digital Filter Kit with Filter Pouch The filter kit "C-PL, UV (C), NDx8" includes a circular polarizer, a UV filter and a neutral density 8 filter, all featuring a 72mm filter diameter. The circular polarizer can cut down distracting reflections in an image whereas the UV filter will safeguard your lens. The ND8 filter is useful to cut down 3 f-stop light so that you can shoot great pictures under mid-day sun.