是的，你可以控制任何距离特定主题的范围从重点，只是控制光圈通常不会把一个梦幻般的柔软背景的水晶般锋利的背景成。

Yes, you can control the range of focus from any given subject distance, but just controlling the f-stop won't usually turn a crystal-sharp background into a dreamy-soft background.

youdao

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.

youdao

这样我们可以自己控制曝光时间和光圈大小。

This allows you to control the exposure and aperture yourself.

youdao