"Rick, great question. I have read the same thgins and the way I look at it is this. I only do serious photography with my tested films (Tmax 100 and Tri-X) using the Zone system as a general rule. I ended up with 6 boxes (25 sheets per box) of the Fomapan 100 and thought I would test it and see what it produced. Since I didn't want to go through the full film testing process with my developers I though Diafine was a good option. The film is thin as you might expect and the emulsion is sensitive and prone to scratches so you need to be extra careful with it. In the 4 5 tests that I have done so far (only with Diafine) the grain and acutance was very good. I haven't shot enough in different scenes to know how it will perform from a tonal gradation perspective, but when I do I will post an update. From my perspective I would never use a film like Fomapan or other similar ones for my serious work because I am unsure of the stability of its production, quality control standards, and I don't want to go through the rigors of testing the film with my developers, etc. For someone just starting out it can be an entry into b/w large format and keep the cost down. From what I have seen the negatives look good and would definitely be printable either in the darkroom or via scanning/inkjet."