I know what you both mean. My own experience is that the flexibility window for FB is wide, perhaps from 1 min 15 seconds to 4-5 minutes, during which time the print keeps changing, but to a lesser extent after about 2.5 minutes (for me in my darkroom. I guess that means that at the 2-2.5 mins I normally use the paper is only 95% developed or so. I think this is what AA meant by in his factorial method examples where contrast could be varied a fair old bit with dev time. In contrast I found that RC papers have a narrow window. Too short and it is underdeveloped. Just right is just right, but any longer makes little to no differenceOriginally Posted by Dave Miller
I guess it mens that RC is pretty well always developed to completion and FB is not?