Automatic light-distributing system for adjusting digital camera measuring and light-distributing parameters based on gray level

The utility model provides an automatic light-distributing system for adjusting digital camera measuring and light-distributing parameters based on gray level. The system comprises a charge coupled device (CCD) or a complementary metal-oxide-semiconductor transistor (CMOS) image sensor, four fiber optical transceivers, a computer, a light-distribution illuminating lamp and a light controller, wherein the CCD or the CMOS image sensor, the first fiber optical transceiver, the second fiber optical transceiver and the computer are sequentially connected; the computer, the third fiber optical transceiver, the fourth fiber optical transceiver and the light controller are sequentially connected; and the output end of the light controller is connected with the light-distribution illuminating lamp. According to the test system provided by the utility model, a good test result can be obtained under various weather conditions.