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.
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.
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.
要想完全控制你的影像，你必须搭配使用光圈和快门速度。
To take full control of your image, you must use both aperture and shutter speed in conjunction with one another.
由于快门速度决定了光线照射传感器的时间长短，所以它也是用来控制曝光亮的手段。
Since the shutter speed determines the length of time that light hits the sensor, it will affect the overall exposure of the image by halving or doubling the exposure.
由于快门速度决定了光线照射传感器的时间长短，所以它也是用来控制曝光亮的手段。
Since the shutter speed determines the length of time that light hits the sensor, it will affect the overall exposure of the image by halving or doubling the exposure.
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