OK burn and dodge tool. This is a often used tool for lightening and darkening areas of an image. You need to approach this tool with caution as it is easy to go to far. This tool should be used near the end of your work cycle on a image. I like to leave my layers intact for later use so I push shift/control/alt and the E keys all at once this combines all the layers to a new layer for your burn and dodge. I name the layer B&D for later ID. Next I usually have a plan. Which ever tool you use start with a brush size that will cover most the area without a lot of passes. Select highlights' midtones or shadows, Set the exposure to a small amount, 1% for highlights and up to 3 to 4% for shadow areas. It is better to use several passes over a area then one pass. Now for one trick, lets say your image has a stream or a rock with a lot of texture and you need to pop the texture out try burning the shadows followed a dodge of the highlights this will really bring up texture and local contrast. This works for lots of things including clouds, give it a try. With a little practice you will like the tools. One note if you have nothing in a white a burn will only make it grey, likewise a pur black that is dodged will become hollow and dead. Hows that? I hope it helps.
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