As I was thinking about Dianfine I thought I needed to add: if you try Dianfine I would use TX or HP5. As I understand it a divided developer works when the developer soaks in during the 1st bath and the activator in the 2nd. Thin emulsions such as T100 or 400 are not able to asorbe as much developer as older style emulsions like TX so they have a lower film speed 160 or 650. I think TX is rated at 1600. But I don't know off the top of my head what any of T3200 film are rated at in Dianfine.

Paul