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The 600 rule

When you’re shooting at night and want to get the stars static, you need to use a fast enough shutter speed so that earth’s rotation doesn’t cause streaks.  Gabe Biderman from RMSP and BH PhotoVideo, was talking about the 600 rule, which is divide your focal length into 600 to find out the longest you can have shutter open.  Some people will be conservative and call it the 500 rule.

summitlakestars

Stars over Summit Lake, Mt Evans

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