The Kodak 4x4" (100mm) Magenta - CC025M Filter helps correct the magenta color in order to remove the greenish tint that registers on films and videotapesIt is made of gelatin to provide better color compensationThese Kodak gelatin filters come in three primary colors red, blue, and green as well as in three secondary colors cyan, magenta, and yellowThe Kodak 4x4" (100mm) Magenta - CC025M Filter has a density of 0.025It is possible to use three filter at a time without any loss in image qualityThese filters are available in different sizes such as 3 x 3", 4 x 4", 4 x 4", 6 x 6",  and 14 x 18"