Does ISO affect Dynamic Range?

Thanks for the responses!
Jerry, I DID try it. That's why I was asking. :er:

Then your answer was in front of you, and you did not catch it. I bet you likely did not check at 100% file size, thats probably why it was not obvious immediately. I know it was for me when I did this test last year after reading about this in the D700 PDF book by Thom Hogan. It was especially obvious when I did the test on my D200.
 
... and now you have your answer. ;)

What I cannot tell you is if this effect is exactly the same in film. I would have to say in my more limited knowledge of film, that the effect would be there, but less so. Film has increased DR over any digital camera on the market to date (12 stops with film, around 9 stops using a D3x), so, whatever was lost (if any), the final results would still be better using film vs digital files.
 

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