Patent ID: 7796873

Claim:
An anti-shake apparatus for image stabilization of a photographing device, comprising: a movable unit that has an imaging device and is movable and rotatable for an anti-shake operation; a controller that controls said movable unit for said anti-shake operation; and a first magnetic-field change-detecting element and a second magnetic-field change-detecting element that are used for position detection of said movable unit in a specified direction; wherein said controller calculates a hand-shake angle in the direction of roll and controls whether said anti-shake operation is performed for correcting hand-shake, on the basis of said hand-shake angle in the direction of roll, wherein a calculation of a rotational direction component of a position of said movable unit for said anti-shake operation is performed based on said hand-shake angle in the direction of roll and a relative distance between said first magnetic-field change-detecting element and said second magnetic-field change-detecting element, when the absolute value of said hand-shake angle in the direction of roll is greater than a threshold value; and wherein said rotational direction component of said position of said movable unit for said anti-shake operation is set to 0 when the absolute value of said hand-shake angle in the direction of roll is less than or equal to said threshold value.