![]() RGB, linked channels: Apply the L-channel curve to all three channels in the RGB color space.Adding contrast in RGB space is known to desaturate highlights and boost saturation in the shadows, but this has been proven to be the most reliable way to edit contrast, and is the standard method in most softwareĭepending on the desired intent you can apply the RGB curve in two different modes ![]() It is related to the capture and display media and does not isolate color and lightness information in the same way that Lab and XYZ color spaces do. mode RGB is a linear color space designed to capture and display images in additive synthesis. Please refer to the curves section for more details about how to modify curves including the interpolation method and preserve colors controls. Ctrl+click+drag to alter the created nodes to have a positive curve for the selected area Shift+click+drag to create a negative curve. Numerical (Lab) values of the input and output (see below) at the selected spot or area are shown at the top left of the widget.Ī second color picker to the right can be used to automtaically create new nodes based on the sampled area. This module is very similar to the tone curve module but works in RGB color space.Īctivate the color picker on the left to show the picked values in the graph (Ctrl+click or right-click to use the picker in area mode). A classic digital photography tool to alter an image’s tones using curves.
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