Hello everyone,
I have taken alot of shots in Durham cathedral with exposures usually running at 2.30 min. I now want to know my normal develpoment time. I am using Rodinal film developer at 1:25. Normal it says for this is 8min. If I run a set of tests as described in books,ie pulling film out at 30secs difference in time, on blank VIII eposures, to find my usable white, this I understand. However will this Normal Time I then discover be still relevent for my extended exposure film. (the books I read say reduced development to compensate for the added reciprocity time).
Jean