本文介绍了照相机的测光原理、测光方式及测光模式；阐述了常见的SPD、CDS、GaAsP等测光元件及应用情况，着重分析了闪光测光技术。
This paper introduce principle , element and mode of the camera photometry , it elaborates on familiar photometry element and application , it comprises SPD , CDS , GaAsP , etc. While it put emphasis flash photometry technology .
测光方式