Most of us normally work on our images in the RGB color mode. In this mode, each pixel is given a certain value for red, green and blue. These combine to create millions of colors. As such, RGB mode is the principal mode for most edits. But it does drawbacks… In RGB mode the color and brightness of your image are linked. Adjust the red, green or blue value of any pixel and, as well as changing the color, you’ll also affect brightness.
This is where LAB mode comes in. LAB stands for Lightness, A and B channels. These represent an entirely different set of values for each pixel. The Lightness values determine how bright the pixels are, while the A and B values set the color. Put simply, LAB…