I love Rodinal but you're too inexperienced to use it. Don't mess with Diafine, same problem. They're both fine, but I think you'd be better off with something maximum conventional.
Rodinal is about the sharpest, most grainy developer you'll find...and it gets more grainy when you push. I push to 1200 with it, but just about everything is better for pushing.
Go with Neopan 400 or any other B&W film about that speed (makes no difference in your case), rate it at 800 (don't push your luck) and process it in D76 or ID11. Look up processing times.
800 will give you plenty of shadow detail if you expose and process properly. On the other hand, if you rate it at 400 you'll have even more shadow detail.
No developer is going to give a rookie better looking prints than any other developer. You should concentrate on getting good lighting and good relationships with your subjects rather than imagining that chemistry will solve anything. Get sophisticated about developers and films with a less important project. Best wishes!
Originally posted by jzietman I've considered getting either rodinal or diafine instead of sprint. I know they're very different, but both look to have produced beautiful negatives from what I've seen. I worry about some reports that diafine-developed negs aren't great for printing, so I'm leaning more towards rodinal. However, I also will probably want to push my film for this project to between 800 and 1600, so that leads me more to diafine. Do you have any experience pushing with rodinal?