我们将前景布上暖光，背景则用冷光。

We are lighting the foregrounds warm, and the backgrounds cool.

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执行以下示例命令可以将背景颜色更改为黄色，将前景颜色更改为红色。

Executing these sample commands changes the background color to yellow and the foreground to red.

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不仅仅是清晰的问题，重要的是它使你可以从画面中得到足够的信息，从而产生对比；你可以将前景的重要物体从背景中分离出来。

To be not only sharp, but to reveal enough information there so that you can have contrast; to be able to distinguish backgrounds from foregrounds from objects was crucial.

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