I only use Diafine. For a while I was playing with Microphen to get 1600 ISO using RanceEric's 25 minute extended development with minimal aggitation, but the grain was kinda big.
I tried Diafine-Time-Two where Tri-X is literally processes 3+3 with a thorough water rinse and processed a second time 3+3 for a doubling of film speed for high ISO work. The results were impressive. A bit more contrast but still good grey scale and mids with fine grain. I found this aceptable, but feared killing my Part A with cross contamination of developers.
I ended up gleaning from Amy (DRabbit) that she got 1250 ISO with Tri-X using Diafine 7+4. I ended up getting results like her rather impressive examples that displayed high acutance, strong contrast and wonderful mids. The film kinda looks like Jim Marshall's work where he shot Tri-X at 800 ISO and used Acufine for a developer. IMHO his film looks like Tri-X that has not been pushed, but has strong contrast with nice midrange. Add in Diafine's compensating effect and I have similar results with a little more film speed.
I intend on doing a lot of hand held night shooting of Tri-X at 1250 ISO. I own a 75 Lux, a 50 Lux and a 58/1.2 Noct-Nikkor. Most recently I bought a Pentax 67II. What a beastly heavy camera to carry all day, but this conditioning definately has made me steadier.
If you are going to wet print I would suggest shooting Tri-X at 650 ISO, especially if you intend to print big as the added negative density records even more shadow detail for a look that moves even closer to large format. I basically just straight print my negatives because they are that consistent. My idea is to try and make perfect negatives like I'm shooting large format and contact printing.
Cal
Cal, you are after everything I want in diafine. I like your philosophy of aiming for straight negs that print well, just like a contact print would.
To be honest, I don't shoot as much as you, and the light levels I typically shoot in over a single roll could be all over the place, making getting a contact sheet with 36 decently exposed frames to judge the roll from, an interesting experience and ultimately a greater waste of larger size paper than I liked. A roll that printed easily, whether as a sheet of contacts, or as individual easy to print work-prints, it would be perfect to me, and am quite keen to give diafine a crack and see how it works out.
The idea of anything other than a straight 3 + 3 is interesting, and would be curious to see how such variations work out, given that there is little to lose by trying it. Must check out and try find some of Amy's (DRabbit) work.
TriX @ 1250, handheld at night. All I can say is you are a man after my own heart. I remember the looks of mild confusion when I met up with a group to shoot at night, as they saw I was shooting handheld. Not sure what it is, but find I have an unnatural resistance to using a tripod for anything, unless absolutely necessary, although going back through some night landscapes I shot digitally when I travelled, remind that of the value of a tripod sometimes..
On that note, might be tempted into shooting some medium format night landscapes with my Rollei, and have some Acros in 120 lying around, begging to be shot. What do you do for your Acros negatives, as I would love to get some of the results you talk about, should I get off my backside to drag that tripod out at night again..
🙂