A ball head is a type of tripod head used in photography and videography. It features a spherical ball that allows for smooth and flexible movement in multiple directions. This design enables photographers to quickly adjust their camera's angle and position, making it easier to capture the perfect shot. Ball heads typically have a locking mechanism to secure the camera in place once the desired angle is achieved. They are popular among photographers for their versatility and ease of use, often being compatible with various tripods and camera systems, including those from brands like Manfrotto and Gitzo.