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?

    Thanks.
     
    Einton Newstein, Apr 8, 2004
    #1
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  2. Einton Newstein

    moda Guest

    HP-400,

    8 minutes, 20C @iso200

    It's the only one I got data for.

    Moda
     
    moda, Apr 8, 2004
    #2
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  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
    #3
  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
    all
    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
    100.
    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
    sure
    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
    of
    compensation. For normal, or plus development, I use Rodinal, or
    D76h.
     
    Ken Smith, Apr 8, 2004
    #4
  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
    #5
  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
    developement.

    I'll start with 80% of the develop time for PMK.
     
    Einton Newstein, Apr 9, 2004
    #6
  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
    #7
  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
    Neopan400)
     
    John Stockdale, Apr 9, 2004
    #8
  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
    #9
  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
     
    Roman, Apr 9, 2004
    #10
  11. Greatly appreaciated. I'll see how many I can collect with this thread.
    Please throw in your experience, no matter what films.
    Thanks.
     
    Einton Newstein, Apr 10, 2004
    #11
  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
    #12
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