Creator of the Photoshop extension ADP Pro v3 for creating luminosity masks and more.
Aaron says : Luminosity Masks are tools used to make extremely accurate selections in your images based on the brightness values (luminance) of the pixels. You then can use these selections to make powerful adjustments to not only the brightness, but adjustments to colour, contrast and digital blending to combine multiple exposures, your imagination is the only limit in their use. They give you complete control over all aspects of your images, allowing you total creative freedom in the creation of your imagery. ADP Pro gives you an unparalleled ability to make these selections and many additional tools to help you get the most out of your images.
Creating and using Luminosity Masks doesn’t need to be complicated. At ADP Pro we have created a panel that puts all of our powerful tools at your fingertips. There are many visual tools built into ADP Pro v3, such as heat mapping, that make the selection of masks very simple, and we give you many tools that allow you to modify your masks at the push of a button to accurately select and target any area you want. http://www.adppro.com