Formatt Hitech 81 Color Conversion Filter (82mm)

The Formatt 82mm 81 Color Conversion Filter controls the bluish coloration that affects daylight film. It can also remove excessive blue from the effects of electronic flash. It's good for general scenics when the photographer wishes to remove the bluish cast from open shade or just add warmth to the photograph.

The 81 series of filters is available in the following grades: 81, 81A, 81B, 81C, 81D and 81EF with 81EF having the greatest effect.