Do realize that it's RC paper. Nonetheless, I tried a box of 5x7 for the heck of it earlier this year. Unlike Azo and the Lodima test run, both of which are the sharpest papers made, Fomalux is fuzzier than many multi-contrast enlarging papers. My observations are all based on contacting with plenty of pressure from the print frame. Therefore, there's no possibility that Ctein's enlarging-lens-LCA phenomenon entered into it.
Saw a couple of very sharp images on the web produced with this paper so I figured I would jack up the pressure on the vacuum frame and see what happens. Worse case I can use it as proof paper.