Backlighting is a photography and videography technique where the light source is positioned behind the subject. This creates a silhouette effect, making the subject appear darker against a brighter background. It can add drama and depth to images, emphasizing shapes and outlines. In addition to photography, backlighting is commonly used in film and theater to create mood and highlight specific elements. It can enhance the visual appeal of a scene by providing contrast and drawing attention to the subject, while also allowing for creative use of shadows and light.