What lens does Canon use to shoot food?

Canon's macro lens for shooting food. Macro lens is a special lens for macro photography, which is mainly used to shoot very fine objects, such as flowers and insects. Macro lenses are usually designed to be stretched longer to focus at very close distances. In order to keep the optical center as far away from the photosensitive element as possible, at the same time, attention should be paid to controlling the deformation and color difference at close range in the design of lens group. The focal length of most macro lenses is larger than that of standard lenses, which is not completely suitable for general photography. Macro photographic lenses generally have two structures. One macro photography lens adopts the structure of built-in telescopic lens barrel, and the other adopts the structure of exchanging the front and rear positions of optical lens groups in the lens. The former, in ordinary photography, the photographer can focus normally only by turning the focus ring of the lens. If he wants to take a close shot, as long as the focus ring that has been rotated to the nearest focus position continues to rotate, he can move the entire optical system of the lens forward synchronously with the built-in lens barrel, thereby increasing the image distance and achieving the purpose of close shot. The latter obtains higher image magnification by changing the front and rear positions of the optical lens group in the lens, thus achieving the purpose of close-up.