A mask is an image editing tool used to selectively protect or isolate parts of a digital image. By covering specific areas, the masked sections remain untouched while filters, adjustments, or effects are applied to the rest of the image. Masks can be created in layers, channels, or using selection tools for precise control.
Understanding masks is essential for photographers, digital artists, and graphic designers who need fine control over image editing. Masks allow non-destructive adjustments, targeted enhancements, and complex compositing, enabling professional-quality edits while preserving original image details.