Sigma sd quattro exposure quesion

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tstruth New Member • Posts: 11
Sigma sd quattro exposure quesion

Hi

I'm thinking about buying a Sigms sd quattro but read that the picture quality gradually drops off above ISO 100.

I'm mainly interested in landscape photography and my question is, is it possible to take lower light photography at ISO 100 by increasing the exposure time and still keep the very good picture quality gotten at ISO 100?

Or will this increased exposure time also be detrimental to picture quality?

Thanks

Sigma sd Quattro
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