Where to find Pyrocat-HD develop time for various films?

Discussion in 'Darkroom Developing and Printing' started by Einton Newstein, Apr 8, 2004.

  1. Where can I find the development time for various films? particularly
    for Ilford FP+125, Panf 50, HP-400, and Agfa APX-100?

    Einton Newstein, Apr 8, 2004
    1. Advertisements

  2. Einton Newstein

    moda Guest


    8 minutes, 20C @iso200

    It's the only one I got data for.

    moda, Apr 8, 2004
    1. Advertisements

  3. Look in www.unblinkingeye.com and get it straight from the horse's
    mouth. Sandy King has an article there.
    Patrick Gainer, Apr 8, 2004
  4. Einton Newstein

    Ken Smith Guest

    I've never seen pyrocat listed, or care for lists anyway. I have
    worked for more than a year now
    with pyrocat, and it is my all time favorite. Every film I've used
    seem to prefer 1:1:100 dilution, as opposed to 1:2:100, and they
    all, oddly
    enough, look good at 72 degrees @ 8 min.HP-5, APX 100, and Delta
    Slow continuous leafing in a tray.
    Usually printed with a no.1 or no.2 filter. Never looks flat, by
    the time the selenium is applied. Just alot of real life tonality.

    My times however are always shorter that everyone's, and I'm pretty
    that's because I give considerable exposure for full shadow
    detail, and
    have strong highs to contend with, so I'm usually at the extreme
    compensation. For normal, or plus development, I use Rodinal, or
    Ken Smith, Apr 8, 2004
  5. That article only mentioned the time would be shorted than PMK or
    WD2D, but nothing beyond that. It did mentioned the development time
    for standing developement would be 45min ~ 60min, but for standing
    developement, the developement is irrelevant.

    I believe many readers would be very appreciated for your pointing to
    that site, but let's make sure we know what we are suggesting.
    Einton Newstein, Apr 9, 2004
  6. Your observation on 1:1:100 is consistent with Sandy King's
    suggestion, although he also mentioned that with 2:2:100 the develop
    time can be 20% shorter, and 1:1:200~250 would be for standing

    I'll start with 80% of the develop time for PMK.
    Einton Newstein, Apr 9, 2004
  7. Einton Newstein

    Ken Smith Guest

    Opps, sorry, a slight correction. I mix solution B at half strength
    so I can get the stuff to dissolve better, which means I'm doing the
    pyrocat at 1:1/2:100. It's so atomatic now, I forgot to adjust when
    telling you.
    Ken Smith, Apr 9, 2004
  8. (Einton Newstein) wrote in message
    For stand or minimum agitation development with Pyrocat-HD, I have
    found that at 1:1:200 I get quite some loss of shadow detail (but
    fabulous sharpness). THere are several references to dilutions around
    1:1:150, and that's what i'll try next.

    At 1:1:100 (standard dilution for silver printing) Pyrocat-HD is quite
    active. FWIW, I have found that Sandy's recommendation of 70% of PMK
    times not only a good starting point, but spot on (with HP5+ and
    John Stockdale, Apr 9, 2004
  9. Einton Newstein

    Ken Smith Guest

    Opps, sorry, a slight correction. I mix solution B at half strength
    AUTOMATIC, damn it. Just another testimony to the dissolution of
    attention span brought on by expendiancy.
    Ken Smith, Apr 9, 2004
  10. Einton Newstein

    Roman Guest

    Don't know if this helps anybody (it's not one of the films asked for
    above), but I recently tested (120 size) Fuji Neopan 400 with
    PyrocatHD, and came to following conclusiones: EI 320, Pyrocat HD
    1+1+100 at 21°C, 13 min. semi-stand development (agitate constantly
    for first minute, then once every 3 minutes...); got my basic info
    from Sandy King himself at photo.net (he is active there...).

    Roman, Apr 9, 2004
  11. Greatly appreaciated. I'll see how many I can collect with this thread.
    Please throw in your experience, no matter what films.
    Einton Newstein, Apr 10, 2004
  12. You didn't read the whole article. Look at page 4 of it. There are
    curves of contrast index vs development time for many films.
    Patrick Gainer, Apr 10, 2004
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.