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[OM] Re: Interesting OM oddity for sale

Subject: [OM] Re: Interesting OM oddity for sale
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Tue, 14 Nov 2006 13:05:08 -0500
That much I knew.  The question really was how long an exposure can you 
get away with?  But the answer is in your link since the subject photo 
is a 5 minute exposure on a 20D.  That should be plenty long enough to 
walk the length of the Acela.

Chuck Norcutt

Manuel Viet wrote:

> Le mardi 14 Novembre 2006 17:24, Chuck Norcutt a écrit :
> 
>>Has anyone here ever done light painting with a digital?  I'm wondering
>>if the long exposure required for the time to walk the length of the
>>train would allow a buildup of noise.  I've never tried an exposure on
>>the 5D of more than a couple of seconds.
> 
> 
> As noise in pictures is directly related to sensor heating, the longer you 
> operate the sensor, the noisier it gets. 
> http://www.astropix.com/HTML/J_DIGIT/JPG_DFS.HTM
> 


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