From the mail bag:
Good ISOless pictures today. The only question that comes to mind is whether LR’s default noise reduction parameters are fine tuned for the given ISO. I thought I read somewhere that they do that sometimes.
Good point. Here are the images with sharpening and noise reduction turned off.
But then there’s this:
Take a look at the bottom images of this current post for an example of ACR/LR noise reduction even with all relevant sliders supposedly at zero.