A light emission control system for a flash device includes a plurality of photometering
sensors for photometric measurements on different photometering zones; and a controller
which outputs a periodic pulsed trigger signal for activating the flash device,
and sequentially selects analog signals output from the plurality of photometering
sensors to convert the analog signals into digital signals in sequence. The controller
outputs the pulsed trigger signal having a predetermined pulse frequency to perform
a pre-flash emission operation in which the flash device is activated to discharge
intermittently. The controller subsequently converts each analog signal into a
corresponding digital signal in sequence in accordance with each trigger pulse
of the periodic pulsed trigger signal before performing a main flash emission operation
in which the flash device is activated to discharge at a time of exposure.
