HSL adjustments refer to the manipulation of Hue, Saturation, and Luminance within specific color ranges of an image. Hue defines the pure color itself, such as red or blue. Saturation determines the intensity or purity of that color, ranging from dull to vivid. Luminance controls the brightness or darkness of that color. The technical purpose of using HSL adjustments to fine-tune the color of specific light sources, such as neon signs in a night cityscape, is to precisely and independently control their visual characteristics without affecting other elements in the scene. This granular contr....
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