Image capture apparatus and control method therefor

An image capture apparatus comprising:

• a detection unit configured to detect a motion vector between images obtained by an image sensor;
• an obtaining unit configured to obtain shake information related to a shake in a rotational direction around an axis perpendicular to an optical axis of an imaging optical system;
• a calculation unit configured to calculate an amount of change between the images based on the shake information and on the motion vector;
• a determination unit configured to determine a shake correction amount based on the shake information and on the amount of change;
• and
• a deformation unit configured to geometrically deform an image obtained by the image sensor based on the shake correction amount, wherein
• the calculation unit calculates a shake component of the image capture apparatus in a direction perpendicular to the optical axis as the amount of change, after cancelling at least one of a change between images caused by the shake in the rotational direction included in the shake information and a change between images caused by an influence of a difference between exposure periods of the image sensor.