Nikon Capture 4 Editor
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Changes to the LCH Editor Palette
The LCH Editor palette now contains the following channels:
The Master Lightness Channel
Although it affects brightness rather than color, editing luminosity has a similar effect to editing the master curve in the Curves palette.
Show Histogram button
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| Luminosity curve |
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| Histogram | |
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level slider |
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input slider |
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Luminosity curve: Maps luminosity in the original image (input) to the luminosity of the image after editing (output). Any portion of the curve can be edited as described in “Curves” ; steepening the curve increases the difference between light and dark areas of the image, increasing contrast.
Histogram: Shows the distribution of pixels of different luminosities in the input. The horizontal axis corresponds to luminosity (in the range
Output level sliders: Choose the maximum (white point) and minimum (black point) values for output.
Input level sliders: Choose the maximum (white point) and minimum (black point) input levels.
Show Histogram button: Click to view the luminosity distribution for the final image. Click again to view the input luminosity distribution.
Auto Contrast button: Set the maximum and minimum input levels to exclude values for 0.5% of the brightest and darkest pixels in the crop. The percentage of pixels excluded can be adjusted in the Advanced Color tab in the Preferences dialog.
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 |
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| Intensity |
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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.
