A Speedlight is a type of portable flash unit used in photography to provide additional light when taking pictures. It can be mounted on a camera or used off-camera to create various lighting effects. Speedlights are popular among both amateur and professional photographers for their versatility and ability to enhance image quality in low-light conditions. These devices often come with adjustable power settings and can be tilted or rotated to bounce light off surfaces, reducing harsh shadows. Many Speedlights are compatible with different camera brands, making them a valuable tool for photographers looking to improve their lighting techniques, especially in conjunction with softboxes or reflectors.