The old PC-Nikkor 35mm f/3.5, as expected, performed much better in IR. It is less sharp than the newer f/2.8 and image contrast is more moderate as well. However, the performance still suffices to make acceptable mages (?)
Same setup as with the 35/2.8 PC. Apparently, I save myself the trouble of getting the iPhone to get the XPanN app. Or regret that I sold my XPan a few years ago.