Enhancing Images

The Color Lightness Channel

The Color Lightness channel controls the brightness of colors without affecting chroma or hue. It can be used, for example, to brighten the blue of a dark sky.

Color lightness curve (vertical axis corresponds to brightness, horizontal axis to chroma)

Width slider

Input display

 

 

 

Intensity

 

 

Color lightness curve: Maps the brightness of colors in the original image (input) to the brightness of colors after editing (output). Moving a point on the curve upward makes colors in the affected portion of the color range more brighter, while moving it downward makes the affected colors darker.

Width slider: Adjust the width of the curve that passes through the selected point, increasing or decreasing the range of colors affected by the change.

Intensity: The amount by which the brightness of colors under the selected point will be increased or decreased in the output image.

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Nikon 4 user manual Color Lightness Channel