Image stabilization apparatus and image pickup apparatus using image stabilization apparatus

An image stabilization apparatus comprising:

• a fixed barrel;
• a movable barrel which holds an optical lens or an image pickup device;
• a support member which movably supports the movable barrel with respect to the fixed barrel within a plane orthogonal to an optical axis of the optical lens or within a plane along a light receiving surface of the image pickup device;
• a drive unit comprising a magnet and a coil, the drive unit driving the movable barrel with respect to the fixed barrel;
• a drive circuit which drives and controls the drive unit;
• a position detection circuit which detects a position of the movable barrel within the plane;
• and
• a judgment circuit which (i) detects, when the drive circuit drives and controls, via the drive unit, the movable barrel so as to move to a predetermined target position, a deviation between the position of the movable barrel detected by the position detection circuit and the predetermined target position, and (ii) judges a possibility that a malfunction has occurred in the image stabilization apparatus, based on whether or not the deviation falls within a first allowable range,
• wherein, when the judgment circuit judges that there is a possibility that a malfunction has occurred in the image stabilization apparatus, the drive circuit restricts a moving range of the movable barrel to a range which is narrower than a normal range and in which image stabilization is capable of being performed by moving the movable barrel.