Well, I tried 14 minutes at 70 degrees F, Rodinal 1:50 on two rolls of Delta 3200: one metered by my refurbished F3, one incident metered by my Luna Pro sbc (which agrees with the F3).(posted 8719 days ago)I now know that the shutter in my old Leica M3 will see no more service until it is serviced -- its negs look at least a stop underexposed.
The F3 negatives are denser but need a little more punch -- 14 min @ EI 1600 looks to be almost N-1. A little better mid-tone separation & I'll be happy.
The grain was smaller than what I'm used to on TMZ, and quite attractive. I'd love the explanation as to why the larger grain patterns of TMZ & Delta 3200 are more attractive than the sci-fi look of TMY & Delta 400...