IMAGE SENSING APPARATUS WITH LIGHT EMITTING DEVICE, METHOD OF CONTROLLING LIGHT EMITTING DEVICE, IMAGE SENSING METHOD OF IMAGE SENSING APPARATUS, AND STORAGE MEDIUM STORING IMAGE SENSING APPARATSU CONTROL PROGRAM

摘要

The peak of a histogram in a first flash preemission and the peak of a histogram in a second flash preemission performed with a light emission amount different from that of the first flash preemission are obtained, and the change ratio of the histogram peak value with respect to a change in flash light emission amount is calculated. By taking this change ratio into consideration, a flash light emission amount for image sensing is calculated. Image sensing is performed by causing the flash to emit light with this image sensing light emission amount.