Product details:

PORTRAIT Make skin tones more vivid and clear Enhances pink and reduces both yellow and orange to make human skin tones more vivid and clear. Combination use with PRO 1 UV (0) is ideal when shooting under fine blue skies. Didymium filters are also referred to as Band Pass filters. They achieve the increase in color saturation through the selective blocking of the colors around the color being intensified. Through this band pass effect Hoya has developed a filter that subtly increases saturation of the pink component in skin tones by reducing both the yellow and orange cast of people's complexion and it does not give an over-all color cast to the photograph.