Long Exposures & noise... ISO vs shutter time

Started Feb 20, 2013 | Discussions thread
BlueTrain
Forum MemberPosts: 57
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Re: lowest ISO = least noise
In reply to Philip Kendall, Feb 22, 2013

Yes that's as I understand it too, and for my camera (5d mk2) I think it is the case that for ISO 50, which requires enabling one of the custom functions, the camera simply takes an overexposed shot at ISO 100 and then recovers from that image.

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