Milky way and Scorpius

Started Jun 18, 2012 | Discussions thread
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DavidAMWA Regular Member • Posts: 456
Re: Milky way and Scorpius

If I remember correctly if think it is called the "500" rule. Divide 500 by the focal length of your lens. The answer will give you the exposure time in seconds. eg, if your F/L is 50mm, the maximum time of exposure before you get significant trails will be 10 seconds. I hope this helps.

 DavidAMWA's gear list:DavidAMWA's gear list
Sigma 150-600mm F5-6.3 | C
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