“I have found that I can always do a better job of sharpening than my camera -- at least one that is more to my taste. I therefore always zero out camera sharpening and replace it with a USM adjustment step. I think you would call such a step "capture sharpening." If I need some selective sharpening, I add one or more USM or high-pass adjustment steps, each involving some kind of selection.”
Yes, now we are on the same page.
“You say the primary purpose of USM is to control noise.”
Only in the context of Capture Sharpening.
Dave Summers Lowden, Iowa Nikonians Photo Contest Director
Nikonians membership - "My most important photographic investment, after the camera"