I have never developed my own film and I intend to start right away. I'm shooting 4x5 and I've just ebay'd a unicolor drum (paper drum, but according to an article on largeformatphotography.info it's good for film). I know there are different ways to process film, some of them involving occasional agitation and periods of rest, others continuous (like the rotary drum system I'm buying). I currently have only shot some sheets of ilford delta 100 and I am looking for processing advice using this drum system - what developer, fixer, washing agents, wetting agents, stop bath, etc, should I try? Is there a rule of thumb to convert development times that you might use in a tray system with occasional agitation to times in a roller? Does this have any effect on the properties of your finished negative (e.g. increased or reduced contrast) or does it simply speed up development? I hope these questions aren't things that you guys are all sick of reading here. It's hard to find succint answers that get right to the point by searching, so I hope someone has some straightforward advice. I have a lot of chemistry lab experience so I'm not too concerned about maintaining temperatures and managing dilutions and that kind of thing, I'm just not really sure which chemistry I should use.