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Thread: Does Bleach type matter for toning?

  1. #1

    Join Date
    Dec 2014
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    Does Bleach type matter for toning?

    Today I was in a hurry and grabbed a dicromate bleach instead of ferricyanide-bromide bleach for toning with thiourea. Dicromate bleach is used for Bromoil preparation and hardens the gelatin slightly.
    The images bleached ok and had the usual tan/greenish gelatin that the dicromate leaves behind. I did not fix so did not lose any silver.
    washed bleached prints for 15miutes.

    I mixed my Toner at 10ml Thiourea, 40ml SH, 500ml water trying for a deeper brown than sepia yellow-brown. Toned for about 1-2 minutes depending on amount of shadow area.

    The images have a nice chocolate tone on multiple papers souped in two different developers. The only side effect I can see is that the white borders are purple-ish on the warmtone papers.

    I am not seeing much of a color difference between the different papers: Ilford Art, MGFB Classic, MGFB WarmTone, and Bergger CB VC WarmTone. Developers were LPD or PF106.
    The magic you are looking for is in the work you are avoiding.
    http://www.searing.photography

  2. #2

    Join Date
    Dec 2014
    Location
    Suwanee, GA
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    1,085

    Re: Does Bleach type matter for toning?

    The answer is - apparently not.
    See sample image on my website
    The magic you are looking for is in the work you are avoiding.
    http://www.searing.photography

  3. #3

    Join Date
    Feb 2015
    Location
    Sheridan, Colorado
    Posts
    2,447

    Re: Does Bleach type matter for toning?

    I've wondered about this too. I've never done much bleaching -- mostly negatives -- so I never thought about running any tests. It seems to that there are two POSSIBLE ISSUES/QUESTIONS:

    #1 -- The immediate results -- differences in tone, density, processing time, etc. This would be easy, but time-consuming to check.

    #2 -- Long term results -- does it impact the life of the negative / print?

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