Quote Originally Posted by sterioma
I am finally home so I can post a couple of samples from the same roll (Tri-X at E.I. 400 and Rodinal 1:25 for 7 minutes). I have attached both the complete picture resized (and smoothed by the algorithm) and the detail from the scan at 3200 DPI.

To me the difference in graininess is quite different. What do you guys think?

Mmmmmm Stefano sorry not helping me I'm affraid I'd suggest you shoot a whole roll of one picture with no other variations. Cut a few frames off at a time (in darkness of course) and try souping each length in different dilutions. That way you will be able to compare the results without any other distractions.