Image sensing apparatus and its control method

摘要

In an image sensing apparatus which has an image sensing element having a plurality of pixels which generate charges in correspondence with the amount of incoming light, and a transfer unit which transfers charge signals generated by the plurality of pixels, first reading of said transfer unit and a second reading are performed after the image sensing element is exposed for a predetermined period of time and before the charge signals accumulated on the pixels are transferred to the transfer unit, wherein a transfer speed used in the second reading is different from a transfer speed used in the first reading.