Question about Aperture

Started Oct 5, 2006 | Discussions thread
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MC Korman
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Question about Aperture
Oct 5, 2006

First off, I've tried to search the forums, but the search feature has been down for a couple days now...so I apologize for asking such a basic question.

I'm slowly getting into the whole photography thing - have been shooting w/ a Canon S1 for about 2yrs and am getting ready to upgrade to a S3. I've noticed in my reading these forums that some people, when taking low light shots, will opt to use a smaller aperture (i.e. 4.0 vs. 2.8) and slower shutter speed with tripod. My question: does using a smaller aperture give you less noise or more clarity? I'm specifically thinking of a moon photo someone posted, where he was at ISO 80 with 4.0 aperture and 1/125 shutter speed. It was an excellent shot. Is there a reason you wouldn't want to open it all the way up to 2.8 and use a bit faster shutter speed (I know you'd still need a tripod)...or does it even matter?

Thanks in advance for your help...and patience!! -mc

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