46mm Pro1D Pro 1D Slim CPL Circular filter
PRO1-D CPL Circular PL filter, Glass Made in Japan. Ultra thin 1mm glass ( same class as HOYA Pro 1 series )
PRO1-D CPL Circular PL filter is used to increase colour saturation, darken blue skies so white clouds stand out. and eliminate reflections from non-metallic surfaces like glass or water. It will also reduce the softness in scenery caused by atmospheric haze.