Well I tried some Delta 400 in Ilfosol 3 (1+9), 7 minutes at 20C with three gentle inversions every minute. It didn't grab my eyeballs like the same film in Rodinal 1:50. Perhaps some more experimentation is called for.
Well of course more experimentation is called for.
Just checked the Ilford data sheet and unless you shot it at about EI 250 or so I think you probably under developed it.
Have you tried Delta 100?
Mark Barendt, Beaverton, OR
"We do not see things the way they are. We see things the way we are." Ana´s Nin