In an image sensing apparatus which has a camera shake correction function
of performing a camera shake correction on a plurality of images sensed
by an image sensing unit by extracting a partial image from each of the
sensed images on the basis of correlation between the sensed images, a
camera shake amount of said image sensing apparatus is detected, and said
image sensing unit is exposed for a first exposure time period when the
camera shake amount is equal to or less than a predetermined amount. When
the camera shake amount is greater than the predetermined amount, said
image sensing unit is exposed for a second exposure time period which is
shorter than the first exposure time period, image signals of a plurality
of images which undergo the camera shake correction are added, and the
added image signals is output as one image.