I have two questions...

(1) I want to create a 'Print Filter' using the QImage photo editor, with custom brightness, color, and sharpening adjustments that I will save to that 'Print Filter', which will subsequently  applied to each print job for which that filter is selected in the 'Printers and Settings' item 'Print Filter'. I would like to build a custom Print Filter for each of my papers, and save that filter within the settings of a print job which I can recall in subsequent sessions knowing that my filter choices for that paper will automatically be applied. (1a) Is this a workable path to getting custom per-paper printing treatment? (1b) Is there a better approach for what I am trying to accomplish?

(2) Some of the settings accessible from Edit/Preferences/Printing Options (such as sharpening, for example) are also accessible using a Print Filter. It is not clear to me how these two duplicate setting paths will affect the final outcome. Does one take precedence over the other, or are both applied in some fashion, perhaps?

Thank you!

>>>> Just use it as a last resort (when you can't get accurate profiles).

Thanks, Mike! Yeah, I've not succeeded in getting the appearance on my monitor to match that on the printer, despite calibrating my monitor & using manufacturer-provided paper profiles for printing & soft proofing. I'm doubtless screwing up somewhere, though I've tried to find and do 'all the things'. Failing that, however, I've resorted to editing each of my images to export a print-ready version per paper type, which I verify through a sequence of test prints on small paper stock before printing large. I'm just toying with the idea of essentially encapsulating those edits in a Print Filter per paper type, which I would save with the job I use to print on that paper type. Then, I could just export my images as they appear on my monitor instead of having to edit them per each paper type. What I don't like about the idea is that my editing process would effectively be distributed across multiple software platforms. But if I could dial things in once & then be done, it could be worth it to me. Just FYI, I guess; I don't expect you to figure out where I'm screwing up my calibration/ICC process.

>>>>> there are two forms of sharpening.

I think what you're telling me is that if I have sharpening specified in the Edit/Preferences/Printing Options dialog, and also have sharpening specified in the Print Filter, that both those sharpening steps will be applied upon printing the image. Is that correct?

Excellent! Thank you!