这些镜头都有不同的有效光圈值及放大率。
The selected lenses all have different maximum effective aperture and image magnification.
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。
You also need to set the proper film speed and aperture. This will all depend on location of the storm.
在一样的光圈值，我测得天空需要4秒的快门时间，但海面需要40秒。
In the same aperture value, I have found that the sky needs four seconds shutter time, but 40 seconds for the sea level.
8的光圈值会使背景的树啊灌木啊如牛奶般柔滑，不过同时也可能把站在最边上的大叔拍模糊了。
An aperture of 2.8 might make the trees and shrubbery look silky smooth, but it might make Uncle Bob at the end of the line look fuzzy.
相机的光圈值越大，所采集到的图像信噪比越大，获得的压敏涂料校准曲线斜率越大。
The larger the aperture is, the greater the image signal to noise ratio is, which results in a greater slope of the calibration curve of the PSP.
当调校至某一光圈值时，穿过镜头的光量是前一光圈值的一半。每个光圈值称为一个“光圈档”。
This camera is easy to operate with the function of automatically adjusting the diaphragm and distance.
一般的解决方法就是用比镜头最大光圈小一些的光圈值，然后用屏幕预览，放大，确认每个人看上去都挺好。
The solution is often to shoot a few clicks smaller than the lenses widest aperture, then use the preview screen and zoom button on your camera to make sure everyone is looking good.
因为这是一切手动，如果你设置什么比你的镜头上停止下来，它会在屏幕上的图像将变暗，最宽光圈值等。
Because this is all manual, if you set anything other than the widest aperture on your lens it will stop down and the image on the screen will darken.
因为这是一切手动，如果你设置什么比你的镜头上停止下来，它会在屏幕上的图像将变暗，最宽光圈值等。
Because this is all manual, if you set anything other than the widest aperture on your lens it will stop down and the image on the screen will darken.
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