Backdrops are large pieces of fabric or painted surfaces used in theater, photography, and film to create a specific setting or atmosphere. They can depict various scenes, such as landscapes, cityscapes, or abstract designs, and are often placed behind actors or subjects to enhance the visual experience. In photography, backdrops help to focus attention on the subject while providing context or mood. They can be made from materials like canvas, paper, or vinyl and come in various colors and patterns. Professional photographers often use portable backdrops for studio shoots or events to achieve desired effects.