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mikebarger submitted a new resource:
510-Pyro - 510-Pyro
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I think it's only a matter of time before this developer replaces all other staining developers for a majority of users. To know it is to love it. What it does for Plus-X has to be seen to be believed.
I've tested 510-Pyro and I strongly prefer Pyrocat-MC.
I'm not here to argue, or advocate. I respect your preference, though I don't share it, and I believe it will eventually place you in the minority.
I'm not arguing or advocating, just stating my personal preference, based on my comparative testing of several staining developers - and I have more developers to test.
Understood, and I wasn't accusing you of either. If you don't mind saying, what was it in your comparisons that won you over to Pyrocat? I could find nothing to win my heart away from 510 in any of the pyrocatechin developers I've tried.
Did I offend?
What is TEA?
TEA is Triethanolamine. It is used as a developing reagent solvent. Tea is also a source of alkali when water is added.
510 Pyro has a consistency like HC110.
Mike, you can safely reduce the viscosity of 510-Pyro and other developers mixed in TEA by adding some warm (80 - 100 F) Propylene Glycol to the mix.
Man, this stuff is really good. I just processed three rolls, over the weekend, in it. FP4+, TX320, and PAN-f, all 120.
The Pan F was OK, the TX302 had far too much grain but the FP4+ rocked!
This stuff gets highlight detail like nothing else.
Mamiye 645AFD, Hartblei 45mm Super Rotator.
I just mixed my first batch earlier this evening and can't wait to give it a try.
Is there anything I should consider when selecting stop bath and fixer for use with 510-Pyro?
I used TF-4 and Ryuji's neutral fixer with no apparent stain reduction.
I can't recall the source but I also recall hearing that people were doing fine with traditional fixers, too (Kodak Fixer, Ilford).
Has anyone done much testing and curve plotting with 510? When Jay first started with this, I tested a bit and was getting rather dead shadows but nice mid tone through highlight behavior. My curves tended to show a long, flat toe. Can you share your experiences and curves if you have them? It may have been something I had done via mixing, technique or who knows what...
Good to know. I was planning to use TF-4. Can I use Kodak Indicator Stop Bath with 510 and TF-4?
I've never used an acid stop with 510-Pyro, just a plain water rinse. I can understand someone wanting to use an acid stop when using high strength dilutions of 510 that require short developing times
PF recommends a water rinse instead of an acid stop bath with TF-4
However, you should be ok using an acid stop bath after the 510-Pyro if you follow the stop bath with a water rinse.
Clear Fix has sufficient pH buffering that you can go from 510 into an acid stop and then into the Clear Fix. IMHO, it's still a good idea to use a plain water rinse after the stop bath.
Since I'll be using the 510-Pyro at somewhere between 1:300 and 1:500 dilution, the water rinse should be fine. And since it's recommended for TF-4, it's what I'll do. Thanks. I'm about to order some FP4+ and get going on some testing with it.
I just happen to have a TON of KISB that I don't know what to do with...
Have any of you guys seen anything of Jay on the other boards?
His Blog site had this information.
"I recently suffered a personal tragedy and can no longer practice photography."
I think this was a February dated posting.
He had always been very helpful when I had asked him questions about 510 pyro.
Just wondering if anyone had heard anything.
I have had recent correspondence with him. He repeated that he wasn't practicing photography at the moment, but he was pleasant, answered my questions, and seemed okay. I don't know about his personal life.
On another note, I too find 510 pyro a very interesting developer and I'm considering switching to it for my everyday use, although I have found a bug in it. I don't wish to start a developer war like those that existed here earlier. If other folks are using this developer or have questions and info, post it or send a PM. I'd be very interested in your results. I'm especially interested in regards to replacing PMK in a rotary process and VC silver based printing.
Be well, --LG--
I've been using it in an old jobo 4323 drum with 2021 reels on a unicolor base and had good luck.
Thanks for the response, I wasn't wanting to dig into his personal life, just concerned about someone that has been friendly/helpful to me.
Jay was helpful to me as well. I'd appreciate a PM with any new information you have about 510-Pyro. I use it as my primary developer...sheet film semi-stand, 1:500...and roll film 1:100 with normal agitation. I'm about to try and work out development times for it in a Jobo tank and a Unicoler base as well.
I'm using HP5 in 4x5 and use the following, 1:200 for 13 minutes 45 seconds at 70 degrees with the unicolor base.