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Thread: Book of Pyro

  1. #21

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    Quote Originally Posted by DREW WILEY View Post
    Forgot one thing ... PMK might not be your best choice for long stand dev either. Although the A&B concentrates seem to last forever, once
    mixed, you need to use the developer immediately, and it might not stay predictable for as long as half an hour. Fifteen minutes certainly.
    As someone who uses PMK Pyro all the time for 30 minutes, semi-stand, I recommend it. It works beautifully. Just don't try to reuse it. One use only.

    Another example with Foma 200:

    https://lh4.googleusercontent.com/-R...52019%2529.jpg

  2. #22
    Bob Carnie's Avatar
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    I concur.. do not reuse the developer for a second run.

  3. #23

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    Didn't quite get that one, Bob... do you, or do you not use it rotary? I found that even at low RPM's, PMK had too much aerial oxidation for
    rotary and led to excess fog, or worse, potentially excess edge dev which thicker emulsions. You could print thru it generally, but it certainly
    isn't desirable. That's why Hutchings recommended argon gas for rotary, and why tweaks like Rollo-pyro came along. My drum processors are
    capable of running a lot slower and more gently than the Jobo, and I'd never go back to using them for PMK.

  4. #24
    Bob Carnie's Avatar
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    I have run thousands upon thousands of runs of PMK on Rotary Jobo, actually in the middle of a series of runs right now and over this weekend.
    Have been doing this for over 18years.

  5. #25
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    Quote Originally Posted by PhotoJim View Post
    It turns out that there are a lot of opinions in photography. Just like not everyone thinks staining developers are best, not all that do think that Pyrocat is best. Different strokes for different folks.
    Yeah, I used to be a real 'pyromaniac' until I read an interview with Brett Weston where he said he's stopped using ABC pyro in favor of a non-staining one (Ethol UFG, if I recall correctly). He said, "it really doesn't make much difference". The ultimate irony is that Sandy King makes only digital negatives now. At least that was what he was doing the last time I talked to him.
    Jim

  6. #26
    Bob Carnie's Avatar
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    Yes but all Sandys current neg's are done as always, he also has been playing with an IR cheater camera.

    I like PMK , but I also like ID11 and other developers, basically it boils down to what lighting ratio you are trying to capture , with an exposure developer plan .


    Quote Originally Posted by c6h6o3 View Post
    Yeah, I used to be a real 'pyromaniac' until I read an interview with Brett Weston where he said he's stopped using ABC pyro in favor of a non-staining one (Ethol UFG, if I recall correctly). He said, "it really doesn't make much difference". The ultimate irony is that Sandy King makes only digital negatives now. At least that was what he was doing the last time I talked to him.

  7. #27

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    Well, staining pyro formulas have made a gigantic difference for me in terms of printing ease and quality, in all formats. Saying you quit because of something Brett Weston said way back when might not have any relevance with today's films and papers. But at that point in time he mainly shot medium format using Agfapan, and deliberately underexposed and overdeveloped to give him those famous blacked out graphic shadows. So if you want to eat your cake and have it too, with reference to detail in both the deep shadows and upper highlights, that approach won't work so well. There are all kinds of pyro formulas, some based on pyrogallol and some on pyrocat. Once LFF is back up, one can look up the "pyro war" threads of past years, which got pretty brutal between different potential formula tweaks. I eventually threw a few punches myself. I don't know how Bob does it in a Jobo unless he uses an awful lot of solution volume to keep the air out in the first place. I personally keep about a dozen different film developers in the lab, mostly for specialized purposes, but like I said earlier, still prefer
    basic PMK for general usage.

  8. #28
    Andrew O'Neill's Avatar
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    The Book Of Pyro may be 21 years old, but there are still some gems in it.
    PMK didn't work for me because I mainly use BTZS tubes. I switched to Rollo pyro, which essentially is PMK, but for rotary. In the end I switched to Pyrocat-HD, because I prefered the look, and of it's ability to give extremely high aqutance in stand/semi-stand devleopment.
    Still love Xtol, and D-19. To each his own.

  9. #29

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    Quote Originally Posted by damonff View Post
    Don't reuse it!
    I didn't have any intention of trying to reuse it. My experiment came out of my experience that dev time didn't seem to make much difference, after I tried for a bit more contrast for a particular roll and didn't achieve it with longer processing. I concluded that I was already close to development to exhaustion in my normal processing described above.

  10. #30

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    Maybe it's just a matter of ethics. Gordon H. took all the trouble to revive interest in pyro, came up with the first popular, convenient modern tweak, and to my knowledge receives no royalties on sales of the chemistry, which he gave us the recipe for anyway. I can't image he got rich over this, with the occasional workshop or print sale. So he certainly deserves a little monetary reward from people buying the book. Besides, it's got some interesting anecdotal historical information and safety notices. And he's never been one to discourage experimenting with later
    formulas concocted by others.

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