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Photography Question 
Charley Andrisano
 

Photographing a star trail


To whom it May Concern: I have seen recently some time exposures of the heavens. I have a Canon Elan-7 film camera and want to open up the lens in Bulb, and take a very long exposure. My concern is, can I leave the lens open for say 6 to 8 hours with the batteries installed. I have two lithium CR 123A 3volt batteries in the camera. Will they hold up for that period of time? Hope you can help.
Respectfully,
Charley Andrisano


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12/24/2007 10:56:47 AM

 
Christopher A. Walrath
BetterPhoto Member Since: 4/25/2006
  I have done prolonged exposures with an Elan 7 and with lithium batteries a two hour exposure did not deplete usage on the batteries by much. I would think 6-8 hours should be doable but I would start with brand new batteries to be safe. Batteries that have been used for a while might not make it.

Merry Christmas
Chris


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12/24/2007 11:40:53 AM

 
Charley Andrisano   Christopher......thank you so much for your response to my question concerning a long exposure to photograph star trails. I will definitely buy two new lithium batteries and play it safe.
Charley


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12/24/2007 11:55:04 AM

 
Dennis Flanagan
BetterPhoto Member Since: 12/31/2005
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  Read this article in Shutterbug Magazine and see it helps.

http://www.shutterbug.net/techniques/pro_techniques/1007artrails/index.html


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12/24/2007 2:25:55 PM

 
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