Shadowgraph
阴影照相系统 shadowgraph system
白天给一个站在窗户前的人照相可能会碰到反光问题。相机暴露在明亮的窗户前，使得人物曝光不足而出现阴影。
Shooting someone in front of a window during the day can present bad back-lighting problems—the camera will expose for the bright window, leaving your subject underexposed and lost in shadow.
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