I've been using Piezography for a year or so now - both on an epson 3880, and a 7880. K7 selenium inks.
I've recently been comparing prints to older medium format / largeformat prints of mine - and one thing that struck me is the smoothness of the darkroom prints that I was never able to achieve with piezography.
Obviously the optical prints can yield higher resolution than inkjetprints (looking at them with a loupe is like exploring another universe :D).
What I've always struggled with -is the "pebbering"/"graineness" I get in my piezography prints when inspecting them very close. I've observed this both on epson 3880 and 7880. I saw it also using the native Epson inks with QTR - seems like its how QTR does things. But was wondering if there is any way to deal with this?
I've attached a scan of part of the 51 step chart below.
I wrote Walker about this a while back and he said this could be due to high ink load of the older curves. Downloaded and installed the new piezography installer and used some of the curves that comes with that but still seem to have this issue. I print mainly on cone 5 and harman gloss warmtone. Using the later paper the issue is even more apparant due to the glossyness/high resolution nature of that surface.
Any suggestions on how to resolve this? I've been considering if profiling/calibrating my setup would help? I was thinking of purchasing a munki spectrometer and the piezography pro software to make my own profiles (is the pro software compatible with the K7 inks or would I need to convert to pro inks?)