Patent ID: 8634021

Claim:
An electronic flash of a camera, comprising: a plurality each of R, G, and B light emitting diodes that are used as an electronic flash light source; a power supply device; a color temperature sensor which senses color temperature of a subject field; and a light emission control device that supplies electric energy separately to each one of the plurality of R, G, and B light emitting diodes from the power supply device, and controls ratios between light emission amounts of R, G, and B that are emitted from the plurality of R, G, and B light emitting diodes and a total light emission amount of R, G, and B, wherein the light emission control device determines a desired light emission color so as to adapt to the color temperature of the subject field sensed by said color temperature sensor and determines the ratios between light emission amounts of R, G, and B so as to adapt to the determined desired light emission color, and performs control to turn on and off individual ones of the plurality of R, G, and B light emitting diodes, respectively, with duty ratios corresponding to the ratios between light emission amounts of R, G, and B such that a desired light emission color is emitted by the electronic flash source, the light emission control device makes each of a start and end of a light emission time of the R, G, and B light emitting diodes to be substantially the same, wherein light emission of each of the R, G, and B light emitting diodes ends when the respective light emission amounts of R, G, and B reach desired amounts according to the desired light emission color; and the light emission control device controls pulse width and turning on/off of individual ones of the plurality of R, G, and B light emitting diodes, respectively, between the start and the end of the light emission time in order to obtain desired duty ratios corresponding to the desired ratios between light emission amounts of R, G, and B and with the same number of pulses for at least two colors of R, G, and B, each having a plurality of pulses.