Patent ID: 7355649

Claim:
A single lens reflex image sensing apparatus for capturing an image of object by an image sensing element, comprising: a battery for supplying electric power; an operation unit configured to designate a cleaning mode to remove a foreign substance in a neighborhood of or on a photoreceptive surface of the image sensing element; a voltage detector configured to detect an output voltage of said battery; a mirror controller configured to move up/down a mirror; a cleaning operation allowing unit configured to allow a cleaning operation for removing the foreign substance by moving up the mirror by said mirror controller in accordance with designation from said operation unit, in a case where the output voltage detected by said voltage detector is a first predetermined value or more; a warning unit configured to issue a warning in a case where the output voltage detected by said voltage detector declines to the first predetermined value or less during the cleaning mode; and a termination unit configured to move down the mirror using said mirror controller in order to forcefully terminate the cleaning operation, in a case where the output voltage detected by said voltage detector declines to a second predetermined value or less, which is a smaller value than the first predetermined value, during execution of the cleaning mode.