![]() The color saturation correction is automatically computed, for each pixel, from the contrast correction applied to the luminance channel. In “Lab, linked channels” mode, only the luminance (L-channel) control is available. In “Lab, separated channels” mode, you are given fully independent control over the luminance (L-channel) and the chrominance (a/b-channels). It represents color information independently of lightness. Lab (linked or separated channels): Lab is a perceptual color space that is designed to approximate the way humans perceive colors and lightness.color spaces Depending on the desired intent, the tone curve can be applied in one of three color spaces: Please refer to the curves section for more details about how to modify curves including the interpolation method, scale for graph and preserve colors controls. Numerical (Lab) values of the input and output (see below) at the selected spot or area are shown at the top left of the graph. This module is very similar to the rgb curve module but works in Lab color space.Īctivate the color picker to show the picked values on the displayed histogram (Ctrl+click or right-click to use the picker in area mode). ![]() ![]() A classic digital photography tool to alter the tones of an image’s using curves. ![]()
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