What Is Masking and How Is It Used When Editing Photos?

When talking about editing and processing images the term ‘masking’ refers to the practice of using a mask to protect a specific area of an image, just as you would use masking tape when painting your house. Masking an area of an image protects that area from being altered by changes made to the rest of the image. Using masks in image editing allows you to preserve portions of an image that you are satisfied with whilst simultaneously altering aspects of the rest of the image such as overall contrast or tone mapping.