1:100 Rodinal is a famorite fomular for developing Technical Pan film with subminiature photographers. It is best to dilute the Rodinal with distilled water with 56 g sodium sulphite per 1000 cc added. Development time 6 minutes at 20 degree C(posted 9262 days ago)Agfa has a fine grain version of Rodinal available in 125 ml bottle, called Rodinal Special. I use 1:60 Rodinal Special to develop Minox format Tech pan film, 20 degree C 15 minutes