光圈的大小用“f”来代表。
光圈的大小不仅影响感光程度,同时还影响在对焦范围的大小。
The size of the aperture not only affects how much light reaches the sensor, but also how much of the image is in focus.
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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