2026-09-14
Selenium toner deepens the blacks of a fibre print and makes it last. Too strong a dilution, and warm-tone papers drift towards an aubergine colour that looks wonderful in the tray and peculiar on the wall.
After six sacrificial prints the numbers that work for me are 1+19 for neutral papers, three minutes, and 1+39 for warm-tone papers, watching the shadows rather than the clock. Pull the print as soon as the deepest shadow changes, because the effect keeps going for a few seconds in the wash.