The cokin p series p039 warm 81z filter has a pink colouring which makes skin appear more attractive with natural tones making it ideal for portrait imaging the 81 conversion series is designed to add warmth to a photograph whilst removing bluish casts from open shades the filter controls bluish coronation found in daylight film as well as eliminates excessive amounts of blue from the effects of electronic flashes the product is a light balancing filter which reduces colo