Patent ID: 7456900

Claim:
A strobe unit comprising: a flashlight emission initiating unit that transmits a signal to a flashing unit which causes the flashing unit to flash; a chattering preventing unit connected to the flashlight emission initiating unit; a communication terminal connectable to an image sensing apparatus; a checking unit connected to the communication terminal that checks a type of synchro switch included in the image sensing apparatus through transfer of information with the image sensing apparatus through the communication terminal; and a control unit connected to the chattering preventing unit and the checking unit that controls the chattering preventing unit based on a result provided by the checking unit, wherein the control unit inactivates the chattering preventing unit based on the result provided by the checking unit, and wherein if the checking unit determines that the synchro switch included in the image sensing apparatus is a switch that does not cause chattering, the control unit inactivates the chattering preventing unit.