Rodinal - dilution and grain? | Photo.net Photography Forums
Jun 12, 2004 · Rodinal is not like most devs. It is a low sulfite/high pH dev. High pH leads to very quick emulsion swelling, which leads to grain crumpling. Low sulfite means there is no solvent effect on the halides, so grain is very sharp, not masked by many filaments. When one dillutes it, pH goes down and also emulsion swelling and grain.
DA: 18 PA: 92 MOZ Rank: 27