Comments about Acufine Diafine 2 Bath Black & White Film Developer Concentrate, Makes 1 Gal. of Solution:

I used this product for many years. I wanted/needed to shoot 400 film @ 1600 ASA/ISO ... I needed the speed, either for sports or low-light situations.
The "regular" (Name Brand) chemicals were more expensive, and also more touchy on temperature control.
Dia-Fine has a much broader temperature window, and by storing the product carefully and maintaining the strength ratio of the "A" and "B" solutions by replenishing from the main solution, one batch would last me for 35-150 rolls of film, depending upon my shooting schedules.
A SUPERIOR product, that greatly simplified my darkroom chores.

Comments about Acufine Diafine 2 Bath Black & White Film Developer Concentrate, Makes 1 Gal. of Solution:

So far I've used Diafine on a few rolls of Tri-X and a roll of Plus-X. This stuff is amazingly hassle-free because it's not too particular about development time and temperature. Consequently it's perfect for someone who is just getting into doing their own development (like me).

Versatility comes in the ability to expose Tri-X anywhere from EI 320 (perhaps even lower) to EI 1600 and still produce good shadow and highlight detail (I should note that I put negatives through a film scanner; I don't print them directly). As for Plus-X, the recommended EI in Diafine is 400, but I tried it on a roll exposed at 125 and the results were equally usable. So I can't speak directly to the exposure latitude with Plus-X, but I'm sure it's there.

The downside--if you can call it that--is that there's no push- or pull-processing (apart from the fact that Diafine is a "speed enhancing" developer with most films). So if you need to develop beyond the exposure latitude offered by your particular film, you'll want to use a different developer.

Overall, Diafine is great stuff and I will likely be using it for 90% of my development needs.

Comments about Acufine Diafine 2 Bath Black & White Film Developer Concentrate, Makes 1 Gal. of Solution:

The best developer for B/W-films. Fast, easy to use with fine grain and good contrast. I use Ilford HP5 and Kodak Tmax100 and Tmax400 with this. No problems with temperature, time. It works and works and works .......

Comments about Acufine Diafine 2 Bath Black & White Film Developer Concentrate, Makes 1 Gal. of Solution:

I got it about half a year ago. Still have the same 2 bottles, keep reusing them over and over again. It is great that you cannot go wrong and overdevelop. Bad thing, in my view, is that you are always "pushing", it always adds one stop to your film, and sometimes you may not want that. Sometimes you have plenty of light and you just want the smoothest pictures with least amount of grain. For these situations diafine is not perfect.

Comments about Acufine Diafine 2 Bath Black & White Film Developer Concentrate, Makes 1 Gal. of Solution:

I started using this great push developer shooting newpaper pics about 15 years ago. Quick and easy, you get a solid, fine-ish grain iso 1250/1600 with Tri-X. Negs are tack-sharp with surprising tonal range. The best thing is you cannot screw up your processing, because temp and time are not super-critical like most other soups. If you love classic available-light photography, give Diafine a try.