An image processing apparatus comprising: a first obtaining unit configured to obtain a focal length of an imaging optical system; a second obtaining unit configured to obtain a distance to a subject; a setting unit configured to set a movable range for a correction unit configured to correct camera shake, based on the focal length and the distance to a subject; and a calculation unit configured to calculate a correction amount for correcting the camera shake within the movable range that was set by the setting unit, based on a camera shake signal from a camera shake detection unit configured to detect camera shake and output the camera shake signal.