为了确保相机准确地记录来自反射光的细微变化，工程师寻找暗背景上的亮光，来提供一个参照点。
To make sure that the cameras are accurately recording small changes in reflected light, engineers look for a bright light against a dark background to provide a reference point.
它很远有一个背景阴影并且有白色亮光在上面。
It has a white base background color and a slight background shadow.
宽动态范围提高了昏暗的物体在明亮光线背景下的图像质量。
Wide dynamic range improves image quality of dimly lit objects against a bright background.
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