Patent ID: 6801716
Filing Date: 2004-10-05
Classification: G03B,H05B

Abstract:
A flash control device for use with an electronic flash device having switchable flash modes as a discrete flash mode for a discrete flash and an FP flash mode for an FP flash, the flash control device comprising:a distance input part for inputting an object distance; a calculating part for calculating a proper flash intensity in accordance with the object distance and an f-number, a sensitivity, and an exposure time of a camera when the electronic flash device is in the FP flash mode, and for calculating the proper flash intensity in accordance with the object distance, the f-number, and the sensitivity when the electronic flash device is in the discrete flash mode, the proper flash intensity being a degree of intensity necessary for illuminating an object with a proper light amount; and an emission control part for instructing the electronic flash device to flash with the proper flash intensity, wherein flash control is performed so that the object is illuminated with the proper exposure amount.