Abstract: A focussing apparatus and a focus correcting apparatus both derive information representing a distance from an AF sensor. A CPU stores lens travels at the telephoto end position, and distance information is utilized to retrieve one of the lens travels. A zoom coefficient is found in accordance with a zoom encoder value, and the CPU performs an arithmetic operation to derive a lens travel for a particular focal length which is currently being used. The zoom encoder value is also used to read deviation data D.sub.k, which relates to a variation from camera to camera, from E.sup.2 -PROM, and such data is used to correct the lens travel to determine a final lens travel.