Nikon Capture 4 - Manual (Page 63)

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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: 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.
Width slider
Color lightness curve
(vertical axis corresponds to
brightness, horizontal axis
to chroma)
Intensity Input display