Purple or blue fringing around overexposed areas is a result of sensor overloading in video as well as digital still cameras. DeFringe isolates and removes the various types of color fringing.

Filter.

To select a preset, choose one from the Presets tab.

Adjusts the saturation of red values in areas defined by the Position and Range controls. Positive values saturate, negative values desaturate.

A matte is generated to isolate red fringing. The areas that are white in the red matte are the areas that will be defringed. Moving the Position numeric field will change the hue that is used for the red matte.

Increases or decreases the range of values considered as red fringing. A low Range value indicates a narrow range of values, while a high Range value indicates a large range of values.

Go to the Matte section of Common Node Controls to see how the Position and Range controls work.

The Green, Blue, Cyan, Magenta and Yellow groups work in a similar fashion to the Red group.