Two questions about ISO!!

Started Dec 19, 2012 | Discussions thread
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blogan
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Two questions about ISO!!
Dec 19, 2012

First, I read where ISO actually has sweet spots, and I was told in a C&C about one of my photos that the ISO setting I was using was not in one of the sweet spots. I have the 7D by the way. Are these sweet spots different from 7D to 7D or are they the same in all 7Ds? And where are they?

Second, I just read: "Set the ISO to expose the shadows correctly." Can anyone shed a little light on this? I thought the ISO was the sensors sensitivity to light. How would I know what ISO is going to expose shadows correctly?

Thanks

Canon EOS 7D
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