Tiffen 6 x 4" Decamired Blue 6 Cooling Glass Filter

The Tiffen 6 x 4" Decamired Blue 6 Cooling Glass Filter - For those who want a sure-fire way of getting accurate color temperature readings, the decamired system is the way to go. Using this formula, you can transpose temperatures from one point to another easily and quickly. This system is also useful when you wish to bring a certain amount of creativity to color photography.