I'm trying to compare recent shots I've taken of new york city street life during a rainstorm (pretty easy muse these days to come by). All I'm trying to do is shoot some 4 x 5's. I've used 10 rolls of Ilford Delta 400, but I'm finding the final result to be much darker compared with the 10 rolls of Kodak TMAX 100. Under the same overcast skies and using the same equipment, I'm getting a much better quality from Kodak than Ilford. Has anyone elese experienced the same results?