| 摘要 |
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.
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