>The point of the thread is that even with low noise, you give >up a lot by using high ISO levels solely on the basis of >noise.
Absolutely. And what I am finding even more interesting is what you might gain from low ISO, and is it worth it. The odd shaped curve on Bill's chart for the D4 at the low end is interesting, as it seems to indicate no point in going below ISO 200. And that above 800,a D3s is just as good. And that a D7000 beats out even the D4 at ISO100.