Selection tools are some of the most heavily used during image processing, especially when it comes to applying corrections to selected images areas. Accurate selection is a real art and can be quite time-consuming. Here, we will describe the most important selection methods and a few of the tools available for assisting the process.
Photoshop offers many ways to select image areas that go way beyond just including or excluding parts of an image. It is even possible to partially affect pixels in a selection – the corrections you then make are only applied to a predetermined degree.
A selection is really a grayscale mask with the following characteristics:
White (255): These pixels are included 100 percent in the selection.