Makes sense based on my little bit of trial last night. It was the funky developer so I didn't delve too far....
If I generally like the exposure at 30s (and increasing causes other problems) but want less contrast is it a 'total' calculation?
Say 5s of flash and 25s of exposure. Or would I do 5s flash and keep the 30s exposure?
Of course I'll play with it but I need to get in the ball park and understand it a bit more.