ISO vs. digital gain in Lightroom

Started Jul 16, 2011 | Discussions thread
WilbaW Forum Pro • Posts: 11,386
Re: Importance of the right ISO

noirdesir wrote:

I have the feeling...

You have a fantasy. This discussion is only about whether there is "no raw noise penalty" from "the same absolute exposure from a lower ISO". Based on two test shots and my perception of IQ, I've disproved that claim.

It's interesting that John also said don't do that unless you're blowing highlights, so, I suspect he's always been speaking from that unstated assumption. I've come across this before. Someone says they have come up with a revolutionary way of setting exposure parameters, and when you get down to what they actually do, they're just avoiding blown highlights while maximising the luminous exposure. Pretty much the same as good ETTR.

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