在物理镜头系统中，光圈调整光线进入系统的数量极限。
In a physical lens system, the aperture is adjusted to limit the amount of light entering the system.
尝试用不同快门速度拍摄，由低到高(调整光圈以获得正确曝光)，注意观察它为你的拍摄带来了何种影响。
Photograph it at different shutter speeds, from slow to fast (adjust your aperture to maintain correct exposure), and see what affect it has on the appearance of the subject in the photo.
这种模式需要较充足的光线，并且你不能在拍摄的时候调整光圈。
This mode needs a lot of light, and you can't adjust the aperture yourself.
其中有一个是头像模式的标志，如你对调整光圈技艺(见下节)并不自信，调到这个模式会让你很省事。
This icon is the symbol for portrait mode and if you're not confident with changing apertures (we'll discuss this below) it's a good mode to switch to as it will do some of the work for you.
将指令盘拨到“S ”来告诉你的相机：我设定快门速度，而你来调整光圈。
Putting the dial on "s" tells your camera "I am deciding the shutter speed, you set the aperture for me."
摄像机镜头的光圈、变焦、调焦控制速度可调，为精确调整摄像机镜头提供情报方便。
The aperture, zooming and focusing control speed of the camera can be adjusted, which provides facility for the precise adjustment of the camera lens.
即使在光圈优先或快门优先模式下，当你调整设定，相机会自动调整另一个设定。
Even in aperture or shutter priority modes, if you attempt the change one setting, the camera will change the other Settings to compensate.
看看调整光圈和快门会有怎么样的效果。
What was the effect of changing your aperture or shutter speed?
她刚刚给照相机换上一个长镜头，带好遮光罩，调整了光圈和速度。
She had just mounted a distance lens on her camera, drawing it forward, and had adjusted the aperture and shutter speed.
光圈和对焦调整都可用螺丝固定以防止由于振动而使其改变。
Both the aperture and focusing adjustment positions can be fixed by set screws to remain secure in high vibration environments.
这种技巧称为“最大光圈”，通过调整数码相机设置，让更多光线进入镜头，便可完成。
This is a technique called Maximum Aperture, and is done by adjusting the Settings on your digital camera to let more light pass through the lens.
职能自动对焦，自动光圈，自动曝光控制，自动增益控制，自动平衡的调整。
Functions auto Focus, auto Iris, automatic exposure control, automatic gain control, automatic balance adjustment.
在拍摄广角的时候，最好同时调整光圈和快门速度，达到看起来正常的蓝色背景。
With wide-angle images, you will need to move both Aperture and Shutter Speed readings to get a blue background that is pleasing to you.
在拍摄广角的时候，最好同时调整光圈和快门速度，达到看起来正常的蓝色背景。
With wide-angle images, you will need to move both Aperture and Shutter Speed readings to get a blue background that is pleasing to you.
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