So what's the deal with lens making these days? How does the older 50 macro work sharper than newer "Digital" friendly ones that are supposed to have more resolving power on a 5Dmk2? (personally, I have more concern with the AA than the lens at a certain point, no?).
If using a P25 db, would a older Roden MC 210 Macro do better than a Schneider 180 HM, or a 180 HR, digital, etc?
Well this said, first, one has to take into consideration the magnification, right? OK, so lets say it is in the range of 1:1 to 3:1, and 2:1 being the norm considering rings being a standard in this subject matter: to fill a P25 with managable DOF (to an extent, not so critical). 120 maybe better for larger subjects.
So, now with a more narrow parameter, can we see true differences in the line up, say up to 16, as in my experience, 22 on these get a little fuzzy....or the extreme max.