Thread: ISO speeds
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Old 27-04-2008, 07:57 AM
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Ric
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Join Date: May 2006
Location: Wamboin NSW
Posts: 12,402
ISO speeds

Hi all, a quick question.

How are ISO speeds for imaging determined?

I have noticed that some images are taken at ISO 800 while others are at 400, 200 etc.

I can see that there are subtle differences at different speeds but was wondering there are any general rules to follow to start off and then I can experiment from there.

Cheers
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