Patent ID: 6718135
Filing Date: 2004-04-06
Classification: G03B,H05B

Abstract:
A flash photography system having a camera body, a main flash device and at least one sub-flash device, wherein said main flash device emits at least one low flash emission, serving as a main-flash emission command signal to said at least one sub-flash device, said flash photography system comprising:a designating device that designates a flash emission mode of a main-flash emission emitted by said at least one sub-flash device; and a command device that commands said main flash device to emit the at least one low flash emission, serving as the main-flash emission command signal, said at least one sub-flash device emitting the main-flash emission in accordance with the main-flash emission command signal and the designated flash emission mode; wherein, when said designating device designates a uniform flash emission mode, said command device commands said main flash device to emit at least two low flash emissions as the main-flash emission command signal; and wherein said at least one sub-flash device comprises: a receiver that receives the at least two low flash emissions from said main flash device; and a controller that controls said at least one sub-flash device to emit the main-flash emission for a designated duration, based on a time interval between two consecutive low flash emissions of the received low flash emissions, the main-flash emission having a substantially uniform intensity over the designated duration.