By having a camera's shutter open for extended periods of time, often well over a minute, trails of light can be drawn with LEDs, flashlights, or even sparklers.

凭借让照相机快门打开时间延长，通常超过1分钟，就能使用发光二极管、闪光灯，乃至闪光物体绘出光线踪迹。

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I am a camera with its shutter open, quite passive, recording, not thinking.

我是一台被动的相机，开着快门只记录不思考。

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It's a challenge to shoot lightning, and the key, as this photograph demonstrates, is to leave the shutter open for as long as possible and shoot repeatedly.

拍闪电是个很大的挑战，至于拍类似这种照片的关键是，用尽可能长时间的慢门，并且反复尝试。

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The cinema systems also don't flicker -- a big complaint about the active lenses, which shutter open and closed very rapidly to try to send a different image to each eye.

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The idea was to pop the D3200 into manual mode, force the shutter to stay open for 30 to 60 seconds while on a tripod, and use the camera to trigger the shutter as to avoid camera shake from mashing the button on the body itself.

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All that reduces induced blur when taking your pictures, and allows the shutter to be open for longer.

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