hi, I actually use stand development with rodinal 1+100 for one hours at 21C. It's great with film 100iso like fp4. It's seem to be more difficult with 400iso. For exemple with neopan 400 I have strange white forms on the side of the film. I think I'll try HP5 and T-max 400. Do you think it's a good choice ? Thanks and sorry for my poor english.