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Old 05-14-2013, 10:36 PM   #86
dave6253 OP
The Tourist
 
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Joined: May 2006
Location: Phoenix, Arizona
Oddometer: 3,196
Good question MrGoldfish. It really depends.

This one was shot with an 8mm Fisheye Lens at f5.6, iso400, and a 30 second shutter time. There was a bright moon and I used a small flashlight to paint the foreground a little.

You can usually use a 25 to 30 second shutter speed with a wide angle lens, but as your focal length gets longer (zoomed in) the movement of the stars becomes more noticeable. At 25 seconds the stars are already elongated.
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