BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an explanatory view illustrating how the entrance pupil position of a zoom lens varies.
FIG. 2 is an explanatory view illustrating how variation in the entrance pupil position of the zoom lens is corrected.
FIGS. 3A and 3B are top plan views of a camera system.
FIGS. 4A and 4B are top plan views of a camera system when photographing an object differing in position from FIGS. 3A and 3B.
FIGS. 5A and 5B are explanatory views of a drive mechanism using a cam.