I know that all these lenses are excellent and that you are unlikely to spot any differences in print at all between them. But being somewhat of a greedy sucker I have come to own all three above lenses (they were free or downright cheap).
Frankly I don't go beyond 13x in 135, and I only print b&w, so it's probably for those reasons that I can't see any differences in prints from the three lenses. Out of curiosity I decided to look up the data sheets to check what the differences should be. The only thing I found was this data sheet on the Rodenstock site:
The older 'APO non-N' isn't in there as neither is the 'current' non-APO (the Rogonar-s data are mistakenly listed twice).
Does anybody know the way to the data on these missing lenses? No big deal, just curiosity.
Interestingly BTW, in the above file the 4-element Rogonar-s and the APO-Rodagon-N seem awfully close in performance, at 10x enlargement and stopped down to f/5.6. Particularly the graphs for longitudinal chromatic aberration are suprisingly alike. Maybe the real differences only show up at 15x and beyond?
Thanks for any links/data.