What does it mean to take a 55-point photo?

Taking a photo for 55 minutes means that the longest focal length of a SLR camera is 55 mm, and the focal length of a SLR camera is generally 18-55mm, 18 is the shortest focal length, and 55 is the longest focal length. So taking a 55-point photo means that the longest focal length of a SLR camera is 55 mm, which is a triple zoom lens. The shorter the focal length, the wider the shooting range, and the more suitable for shooting scenery. The longer the focal length and the farther the shooting distance, the more suitable it is to shoot some special subjects, such as birds. Focal length: refers to the distance from the lens center to the film plane. For a fixed-focus lens, the position of the optical center remains unchanged, while for a zoom lens, the focal length changes due to the change of the optical center of the lens. The focal length of modern SLR lenses ranges from 6 mm to 2000 mm, and the commonly used focal length range is 15 mm to 600 mm