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    Re: 510 Pyro - First Impressions

    Everything about creating compelling images is "subjective". I already made it clear that I've spent nowhere near the time with 510 as I have Pcat. But the little I have done doesn't compel me to...
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    Re: 510 Pyro - First Impressions

    I like D-23 a lot and use it in certain specialized situations - e.g. Rescuing very old film that will not properly process in Pyrocat-HD without massive bromide drag (semistand). Noted, for...
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    Re: 510 Pyro - First Impressions

    I found that mixing the stock solution 1:2 with propylene glycol for storage and then using 3x that solution as one would of stock works fine.
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    Re: 510 Pyro - First Impressions

    Just remember that Pyro is a toxic substance so use appropriate lab technique - a protective apron or labcoat, nitrile gloves, eye protection, good ventilation, an appropriate mask, etc. Do this...
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    Re: 510 Pyro - First Impressions

    Well, it can't be done to lab precision levels, but comparing concoction A against concoction B by processing negatives shot at the same time/place comes close enough for practical purposes. It's...
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    Re: 510 Pyro - First Impressions

    Because nothing matters but my own work, done my way, with my workflow. Until I have a process dialed in, there is no way to know how the material works in context.
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    Re: 510 Pyro - First Impressions

    I finally got to print some of the 510 Pyro negatives. I am retracting the observation that they are less sharp/lower acuity than Pyrocat-HD. Actual prints show excellent sharpness as expected from...
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    Re: 510 Pyro - First Impressions

    The 1.5:1:200 dilution was Sandy King's recommendation as a starting point for low agitation development. Steve Sherman has similarly dilute concoctions in his workflow.

    There is a balancing act...
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    Re: 510 Pyro - First Impressions

    Yes, if I were inclined to do more tests, I would try 1:100. But I am seeing nothing in 510 that compels me to try and tune it further. It produced entirely printable negatives, but the outcomes...
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    Re: 510 Pyro - First Impressions

    I routinely dilute Pyrocat-HD 1.5:1:200 or even 1.5:1:300 and get consistent and excellent results Semistanding across a wide variety of films. The only film that's had any real problem with it, is...
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    Re: 510 Pyro - First Impressions

    I have now tested 510 Pyro with 4x5 films both at 1:300 (Fompan 200) and 1:400
    (Tri-X, Fomapan 200) with Semistand development:

    3 min presoak
    2 min continuous agitation @68F
    Stand
    15 sec...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    What???? Your actual images don't listen to the theoretical woulda/coulda/shoulda analysis? The very idea.

    For the record, I do see great value in sensiometry and photochemical research. Both...
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    510 Pyro - First Impressions

    No prints yet, this is based on inspection of wet negs...

    Tri-X 4x5 exposed at ASA 320
    Pyro 510 1:400
    60 min semistand: 3 min prewet, 2 min initial agitation 15 sec agitation @ 31min
    Open tank,...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    There is a long and painful tradition on the internet that self-anointed experts want to tell everyone else they are wrong because they - the expert - always know better. As you point out, the...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    I have been a silver printer - better- and worse - for over 50 years. This position on your part is hyperbolic nonsense. I have empirical and evidentiary proof (not supposition) that you're just...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    Getting unsharp masks to properly align, fiddling with mask exposure, etc. is a whole bunch more time consuming and error prone than EMA. Once EMA is dialed in, there is no real handwaving, just...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    So, if we stipulate to that, we'd expect to see little- or no pyro-related adjacency (edge/Mackie line) effects. That may be true in theory, I haven't sufficient expertise to comment on the...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    I fully concur with this. My extensive personal testing last year to find my own optimal semistand and EMA configuration bears this out visibly and beautifully.
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    In 50 years of doing this, I've had a number of inflection points in which some technical "epiphany" or another opened up my work that translated directly into better aesthetic results:

    - Finding...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    Well ... that's not really an argument from the objective scientific facts but more of an oblique observation based on law. I'm not saying you are wrong, only that this is besides the point. Deeper...
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    Re: Processing 510 Pyro & 100TMX with Jobo CPP-2

    A bit over the top. Yes, Pyrogallol is nasty stuff. That's why you wear a lab apron, nitrile gloves, and eye protection when using these developers and additionally a good mask and ventilation when...
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    Re: Post yer 35mm shots!

    Here are a couple scans of silver prints:

    https://www.tundraware.com/Photography/MyPhotographs/Silver/media/large/20220421-1-05-Screen_Shot.jpg
    ...
  23. Thread: New Winter Work

    by tundra
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    New Winter Work

    I just got an 8 1/2" f/6.3 Commercial Ektar that I promptly cleaned up and thus wanted to try out. I prefer "testing" while attempting to make real pictures, not just test shots.

    Speed Graphic,...
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    Re: Low Agitation With Super-Dilute HC-110

    The bromides in question are not caused exclusively by the KBr in the developer as best as I can tell. There are reaction products from the silver bromides in the film itself released during...
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    Low Agitation With Super-Dilute HC-110

    I've updated my ongoing notes on low agitation development to reflect some testing I did with HC-110 diluted 1:128:


    ...
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    Re: Developing tank advice

    Interesting. In my case, I am using pinch support at the top of the film and nothing elsewhere in 1/2 gal open rubber tanks. This seems to eliminate drag effects completely in all films (except one...
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    Re: Developing tank advice

    Yes, this was my understanding as well. However, someone here suggested I try Pyrocat-M since it has no KBr to see if this reduced the propensity for drag. It did not, and I am unsurprised.
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    Re: Developing tank advice

    OK so, to followup on this... Yesterday I mixed up a batch of Pyrocat-M and processed two sheets of exposed film using the Kodak frame hangers to suspend them in a 1/2 gal Kodak rubber tank.
    ...
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    Re: Developing tank advice

    Ideally, if I can get one of the Pyrocat variants without KBr to work to suit, I can hopefully go back to standard hangar frames. These protect the film from scratching and abrasion better than...
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    Re: Developing tank advice

    I've run into that myself, but the fix is to pick a tank large enough for the number of sheets in question. for 1-4 sheets (my most usual case) I use a 1/2 gal rubber tank. For more than that,...
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    Re: Developing tank advice

    Yes, that does seem reasonable. The worst bromide drag I ever saw was with Semistand development of very old Plus-X sheet film from the 1970s. This disappeared entirely when I used D-23 instead...
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    Re: Developing tank advice

    I use hangers of this kind and a 1/2 gal Kodak rubber tank: https://i.ebayimg.com/images/g/mN4AAOSwvRFgvjmU/s-l300.jpg

    You can also use X-Ray film clips but you have to figure out a way to...
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    Re: Developing tank advice

    The drag problems are noted with Pyrocat-HD which - as you say - does have KBr.

    I do use Photoflo, but not in the tanks used for development or fixing. I use open tank development in Kodak 1/2...
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    Re: Developing tank advice

    I routinely prewash for 3 minutes and continuously agitate for 2 min initially. Nonetheless, anything except pinch hangers and widely spaced reels gave me bromide drag irrespective of whether I was...
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    Re: Developing tank advice

    When I was researching low agitation development earlier this year, I incidentally ended up also researching sheet film development technique. Low agitation is just merciless if you have any kind of...
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    Re: safe haven for tiny formats

    Posted in separate thread a couple weeks ago but - in the spirit of shameless self-promotion ...

    2x3 "Baby" Speed Graphic, 180mm f/5.5 Tele-Xenar, Ekfe PL 100M sheet film, semistand developed for...
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    Shanghai GP3: First Impressions

    EDIT: What I describe below is for 4x5 sheet film. I have not tried the 120. Also, I am told - but have not confirmed -
    that this same film is available in the US as a private label product from...
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    Re: Old Glass, New Fun

    Can't wait to see the results!
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    Re: Old Glass, New Fun

    As a matter of curiosity, what format did you shoot and how did you suspend the negative for development?
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    Re: Old Glass, New Fun

    Great to hear. I would suggest several modifications:


    Prewet the negatives for 3 minutes in running water to prepare the emulsion to absorb the developer
    Make your initial agitation...
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