Set your camera to its lowest aperture value (completely open).
将你的相机光圈开到最慢（完全打开）。
You're going to find your spot, set up, select the correct film speed and aperture for the type of storm, open the shutter and wait for the first lightning strike.
你要根据风暴的现状找到自己的最佳位置，设置参数，选择正确的胶片速度和曝光值，打开快门等着第一道闪电的降临。
This is because you halved the amount of light being let through the aperture opening, but let in twice as much light by keeping the shutter open longer.
这是因为前一组你用了一半的光圈，而后一组用了一半的快门时间。
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