This works best with a compact set on a tripod; simply hold a removed lens from the sunglasses' frame as close to the front of your camera lens as possible.

在三脚架上放张光盘，把拆下来的镜片就用手拿着，尽可能靠近镜头。

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Set the lens aperture to the aperture value designated by the flash unit according to the ISO setting your camera.

按照您相机上闪光装置ISO设置，设置好镜头的光圈大小。

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Camera lens should be set to infinity with maximum aperture. then point the camera to perseus or neighbour constellations for a5-minute exposure time and try your luck.

将镜头对焦至无限远，对准英仙座或其邻近星座，把光圈调至最大，曝光5分钟，应有收获。

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"Of course, the camera was set to manual and I mounted a wide angle lens that allowed me to include the whole church in the frame, " he says.

BBC: Lightning really does strike twice

"I set up one camera with a wide-angle lens for a wide view of the whole cathedral, and another with a longer lens trained on the centre of the cathedral floor below, " says Lipinski.

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