Backlighting is a technique used to create a dramatic effect in photography. It involves placing the light source behind the subject, resulting in an illuminated background and a silhouette of the subject. Backlighting can be used to create interesting shadows, focus attention on the subject, and add depth to an image. It can also be used to create dramatic silhouettes or highlight certain features of a subject. Backlighting can be achieved using natural light or artificial lighting such as flashlights or studio lights. When using backlighting, it's important to ensure that your exposure settings are correct so that your image isn't too bright or too dark.