Adjust the shutter speed and aperture.
校准快门速度和光圈。
Aperture sizes are expressed in "f-stops."
光圈的大小用“f”来代表。
The airy disk becomes smaller as you increase the aperture.
当你增加孔径的尺寸时，艾里斑会变小。
Set aperture to f32 - this was the smallest I could get on the lens.
光圈调至f32-这是镜头上的最小光圈。
This is the ratio of the focal length of the telescope to its aperture.
这是指望远镜的焦距与其孔径的比值。
It works by separating the mirror flip and aperture opening into two steps.
它将镜面翻转和光圈打开分为两个步骤。
This mode needs a lot of light, and you can't adjust the aperture yourself.
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。
For example, the maximum power on a 60mm telescope (2.4 "aperture) is 142x."
比如，孔径为60mm(即2.4英寸孔径)的望远镜最大放大率为142x。
It widened smoothly. Soon he'd made an aperture twenty-five centimeters across.
它顺利地变宽了，很快成了一个25公分的孔。
Taking control of the shutter and aperture isn't easy, but the rewards can be great.
同时控制快门和光圈并不简单，但却绝对值得。
As you increase the shutter speed, you'll need to widen the aperture and vice versa.
让你增加快门速度的时候，你可能需要扩大孔径，反之亦然。
The main lens is fixed in place; there is no auto-focus, auto-aperture, or other gubbins.
主要镜头是固定的，没有自动对焦和自动光圈以及其他小配件。
To calculate exit pupil, divide the aperture (in mm) by the power of the eyepiece being used.
为了计算出射光瞳，可将孔径(单位mm)除以目镜的放大倍数。
At any given magnification, the larger the aperture, the brighter and sharper the image will be.
对于任何放大率的望远镜，孔径越大，其成像亮度越高，成像边缘越锋利。
You also need to set the proper film speed and aperture. This will all depend on location of the storm.
你还需要根据风暴的位置远近设置好适度的快门速度和光圈值。
But the principle of focusing rays through an aperture onto a two-dimensional surface remains the same.
但其原理通过孔径聚焦光线在一个二维表面是保持不变的。
The larger the aperture, the more light it collects and the brighter and clearer the image will be.
孔径越大，它收集的光越多，成像的亮度和清晰度就越好。
The APG-79 AESA synthetic aperture radar (SAR) has a higher success rate than previous radar technologies.
同先前的雷达技术相比，APG - 79AESA合成孔径雷达(SAR)具有更高的成功率。
Notice that perhaps your camera will select, on its own, a shutter speed of 1/125 with an aperture of F11.
注意相机可能会自动将快门速度设到1/125，光圈设到F11。
The rule is that the smaller the number, the wider the aperture and the more light that can hit the sensor.
规则是数字越小，光圈越大，能到达传感器的光也越多。
At the bottom of this plate, an aperture had been pierced exactly similar to the orifice of a letter box.
在那铁皮的下方，开了一个口，和信箱的口完全同一样。
The limiting magnitude is directly related to aperture, where larger apertures allow you to see fainter stars.
边缘亮度直接与孔径相关，孔径越大，就能看到越暗的星。
That price obviously puts large aperture scintillometers out of the reach of the average farmer in, say, India.
大眼睛闪烁仪的这个价位对于诸如在印度的普通农民来说，实在是太昂贵了。
Aperture Priority Mode is a great way to control depth of field as it will ensure your images are well exposed.
这个半自动的模式是控制景深并保证良好曝光的绝好方式。
If you're really feeling bold, try going to manual mode where you control both the shutter and the aperture yourself.
如果你觉得自己足够大胆，那就试试使用手动模式让自己同时控制快门和光圈。
Airy disk brilliance (the brightness of a point-source stellar image) is proportional to the fourth power of aperture.
艾里斑的亮度(点光源恒星的图像亮度)正比于孔径尺寸的四次方。
Airy disk brilliance (the brightness of a point-source stellar image) is proportional to the fourth power of aperture.
艾里斑的亮度(点光源恒星的图像亮度)正比于孔径尺寸的四次方。
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