Excessive Grain

Discussion in 'Darkroom Developing and Printing' started by lvc, Aug 25, 2003.

  1. Ilford's times are for agitating once a minute. He agitates
    twice that, so needs to use a slightly shorter time. Personally
    I'd reduce the agitation instead.
     
    Jan Brittenson, Aug 27, 2003
    #21
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  2. Snipping here...

    I wrote Ilford to ask about the time. Here is their reply.

    The 11 minute time is correct. A few years ago, in response
    to customer
    comments, ILFORD retested FP4+ in a variety of developers.
    Although the
    details are not known, it is apparent that the earlier
    testing contained an
    error, which yielded results that, while usable, were not to
    the same standard
    of contrast used for all other ILFORD films. Because of
    these findings, ILFORD
    revised the recommendations for FP4+.
    Note that this does not reflect a change in the film or the
    developers. If you
    were satisfied with the results you obtained with the
    previously published
    times,
    then you should continue to use those times.

    Regards,
    David Carper
    ILFORD Technical Service





    "Richard Knoppow" <> on 08/25/2003
    10:35:09 PM

    Please respond to "Richard Knoppow" <>


    To: US-techsupport/US/[email protected]
    cc:
    Subject: FP-4 development time




    Information in the box and elsewhere indicates time for
    D-76 1+1 of 8.5 minutes @68F. The current PDF on the Ilford
    web site indicates 11 minutes. Which is correct and why the
    difference?
     
    Richard Knoppow, Aug 27, 2003
    #22
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  3. Have you seen beginners agitate?
     
    Michael Scarpitti, Aug 28, 2003
    #23
  4. I'm not sure I understand you.

    My agitation is as follows:

    After pouring in the developer, I invert and rotate the Paterson tanks
    continuously but gently for the first 30 seconds, then gently rap the
    tank on the table-top and leave it there. For the next 30 sends, I
    watch the walls. Then, beginning at the next minute and each
    successive minute, I invert/rotate twice, which takes about 4-5
    seconds. Total agitation is therefore only 4-5 seconds per minute
    after the first minute.

    I use a pre-soak, the duration of which is not critical.
     
    Michael Scarpitti, Aug 29, 2003
    #24
  5. lvc

    Dan Quinn Guest

    RE: (Michael Scarpitti) wrote
    I'll make it more clear. The first post this thread: Does Ivc
    invert 5 times within 5 seconds? Dan
     
    Dan Quinn, Aug 29, 2003
    #25
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