warmtone papers

Discussion in 'Darkroom Developing and Printing' started by lofty, Jun 6, 2008.

  1. lofty

    lofty Guest

    Hi All,
    Using Ilford warmtone or Forte polywarmtone FB papers with Agfa WA warmtone
    dev what is the best dilution and temperature for the dev to get the warmest
    tones out of the papers.
    Thanks in Advance

    Lofty
     
    lofty, Jun 6, 2008
    #1
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  2. Temperature should not make a lot of difference as long
    as the developer is not cold (below maybe 60F). I beleive
    Agfa WA uses Hydroquinone as an active developing agent and
    it becomes inactive at low temperatures (except when at very
    high pH).
    Dilution does make a difference, generally the more
    diluted the developer the warmer the tone but you will lose
    paper speed and there will be a loss of maximum black.
    You may have some success if you add quite a bit of
    potassium bromide to the developer. Here again you will lose
    some paper speed but can get decent blacks. You can add up
    to maybe 15 grams/liter of working solution.
    Developing time is also important, the shorter the
    warmer the image. However, there is a limit here too because
    too short a time will result in uneven development and loss
    of maximum black. Probably around 90 seconds is the shortest
    practical time.
    If you want _very_ warm results you will probably have
    better luck toning plus toning will protect the image. Warm
    tone paper images are made of very fine grain silver which
    is particularly vulnerable to oxidation. There are a number
    of toners available. Kodak Brown Toner gives good results
    and tones evenly for partial toning. Beyond that I think you
    will have to mix your own.
    Note that when toning you may get more acceptable
    results when toning a cold tone paper. As a rule of thumb
    the toned image will follow the original image in that cold
    tone papers tone colder than warm tone papers.
    What you really want is Kodak Ektalure but its been
    discontinued for decades.
     
    Richard Knoppow, Jun 8, 2008
    #2
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  3. lofty

    lofty Guest

    Thanks Richard
    lofty
     
    lofty, Jun 8, 2008
    #3
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