argus said:Jeff,
John is right: agitation gives control over contrast, but so does Nx development. Others might provide a good explanation for this.
I don't change agitation schemes in stand development because the greatest merit of it diminishes: soup the negs and have dinner without worries
Don't be affraid for the dillution, I use 1:150, i.e. 7.5cc in 1 liter, per 4 sheets in a slosher tray.
Making the dillution stronger will make you drift away from stand development and, as I understand, that is not your goal.
To find times for Nx development, make similar exposures and experiment with development times by taking a sheet out of the process at your time - 30%, -15%, +15% and +30%. Those results will guide you towards somewhat correct times for Nx development.
Greetings,
G
WarEaglemtn said:If you add some sodium ascorbate to the Rodinal you can get results a bit cleaner and sharper yet. Really a nice way to go.
I used Rodinal with FP4+ for some time but when Sandy King came out with his Pyrocat HD and I tried it I have never looked back. Very nice to work with, very clean and controllable. You can dilute to your hearts desire and mix the developer strength by modifying the part A and B to water ratio.
Add to that the staining action and you have a nice combination that works beautifully.
I am also using FP4+ and Rodinal with the zone system.I have done N and N-1 development so far.N-1 development with -15% development time.I'd like to know whether N-2 is achievable with FP4+ and whether -30% is a feasible starting point.I've used Pyro, in the past, but I don't think the HD variant. It seemed kind of a hassle for me to mix and use, and I really like the ability to use my little densitometer to understand what density I am achieving. I am told that the color of the stain makes this impossible though.Interesting. I might try that sodium ascorbate some time. Right now, it is one more variable that might disrupt what I'm trying to do. I guess I am really concentrated on trying to get predictable plus or minus contrast ranges out of Rodinal stand development at this point.
1+100 1 hour stand I found for FP4+ was actually over developed, probably like N+2 development, and also lacked detail and lost sharpness in comparison to regular development with 1+25 and Xtol, I do not recommend it.
1+25, with 1.4g/L potassium thiocyanate added and 10mg/L potassium iodide added, will give you way more sharpness then any regular development, and better grain than any Rodinal method or dilution.
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