Just got some Diafine for Christmas. Okay, so I go to read the instructions. It's one sheet of paper, single side, barely bigger than a post card. I have a hard time believing it's really THAT simple. Whatever film you've got... Just put it in there. Three minutes... five minutes... whatever? 20º C... 25ºC... more or less? Okay, I'm being a wise guy, here, but REALLY? I've been spending all this time fussing around with times, temperatures, dilutions and all that junk when I could have been using Diafine all these years? Is tweaking your film is as simple as changing your in-camera exposure? I usually do that anyway. Am I missing something, here? Why isn't everybody using Diafine?