A good rule of thumb to minimise camera shake is to set the shutter speed at a minimum of one second divided by your focal length.

测算你相机的安全快门速度有一个好的方法，你相机镜头焦距的倒数，就是你避免镜头抖动的快门最小值。

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If you wish to photograph the moon retaining as much detail as possible with a minimum of cropping to fill the frame, you need lenses with a long focal length.

如果你想拍摄月球保留尽可能多的细节用最少的种植来构图，镜头的焦距。

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If you wish to photograph the moon retaining as much detail as possible with a minimum of cropping to fill the frame, you need lenses with a long focal length.

如果你想拍摄月球保留尽可能多的细节用最少的种植来构图，镜头的焦距。

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