Autofocus is a technology commonly found in cameras and photography equipment that automatically adjusts the focus of the lens to ensure the subject of the photo appears sharp and clear. This feature has greatly improved the convenience and accuracy of capturing images, especially in situations where quick focusing is needed, such as in fast-paced events or while shooting moving subjects. Autofocus systems work by using various methods, such as contrast detection, phase detection, or hybrid systems, to detect the sharpness of the subject and make adjustments accordingly. This technology has become a standard in modern cameras, offering photographers a reliable way to ensure their images are in focus.