I could not avoid jumping on this subject and following James questions, as I had the same kind of thoughts when I first read about the use of ICC’s on PiezoDN…
I would suppose that the option of using the ICC profile for soft-proofing (the traditional system) would suppose that one will see the major loss of contrast on the display (the whites will adopt the paper white measured on the printed target while linearizing, and the maximum black on the screen will adopt the Dmax measured on the same target)… Then, one will manually decide on a boost of contrast (typically by darkening the shadows) in order to make the soft-proofed image on the screen get a certain boost of mid-contrast. To be clear, this will not change the fact the overall contrast of the print will match that on the screen (since no matter which changes we make to the file, the final Dmax on the print and the paper white will never change) but it can alter the feeling of contrast (the contrast of the mid tones).
This, which would be done manually and by deciding on the base of what one sees on the soft-proofed version of the image, is what the application of the ICC when printing from Print Tool gets done automatically… is this right?
I am asking myself because that is what I understood myself, hoping too to help James understand the concept…