High ISO vs sensor noise during long exposures.

Started May 16, 2012 | Discussions thread
Ollie 2
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Re: High ISO vs sensor noise during long exposures.
In reply to Bob Tullis, May 16, 2012

Thanks Bob.

It's an interesting dilemma. I'm certain that there must be a formula based upon a particular camera's ISO function vs time exposed = best IQ/lowest noise.

...but then, I suppose it comes down to types of noise.

Hmmmm....to be continued...

Bob Tullis wrote:

And there's the rub. The general recommendation is to use the lowest normal ISO possible. The subject, intent of the exposure, and one's patience might have one raise the ISO for one or more reasons, but that's with the knowledge that long exposure noise will also result to some degree or another.

You'd have to experiment to see how much high ISO noise is tolerable, or too noisy, if you don't mind sacrificing IQ in certain situations.

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...Bob, NYC
http://www.bobtullis.com

"Well, sometimes the magic works. . . Sometimes, it doesn't." - Little Big Man
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