而当相机处于手动模式的时候，由你来控制快门速度从而得到你想要的照片。

With the camera in manual mode, however, you control the shutter speed to get the shot you really want.

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现在你已经了解了这两个参数——快门速度和光圈大小，他们从本质上来说有同一个功能：控制进入相机的光线总量。

So you have these two parameters, shutter speed and aperture size, both of which do essentially the same thing: control how much light gets in.

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夜间摄影与白天摄影受到同样条件的约束——即光圈，快门速度，感光度——不过它对于这些参数的控制都要达到极致。

Night photography is subject to the same set of constraints as daylight photography - namely aperture, shutter speed and light sensitivity - although these are all often pushed to their extremes.

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