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  1. #1
    mooseontheloose's Avatar
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    Pepper fogging on Ilford MG warmtone

    I'm currently working on a series of lith prints for an exhibition that starts in two weeks. This was only my fourth lith session (in as many weeks) -- I'm using Moersch Easy Lith (1+25, sometimes with replenishment or hot water top up leading to a 1+35) and mostly Foma papers - 542 and 132 being my favorites. The Kentona liths nicely, but doesn't have any nice colours.

    Anyway, during each of my sessions I usually like to try some other paper (usually old ones we have at the darkroom) to test their lith capabilities. This time I thought I would try some (new) Ilford FB warmtone, since I was having such a great session and I thought it might work with the high dilution (1+35), hot temperature (32 degrees C) and having a more mature developer (had one replenishment).

    Well, it took about 5 minutes before anything appeared, and after a while I could see a veiled grey image appearing (borders remained white). I finally pulled the very grey print out after 22 minutes, and to my surprise it looks like what might be pepper fogging -- what was an image of a wooden carving now looks like something carved of stone, and very weathered. Although it's dark, it's still kind of interesting. I was just curious if others have experienced similar pepper fogging on this paper?

    rachelle

    (I'd post the image but my scanner doesn't allow for resizing to APUG limits)

  2. #2
    rwyoung's Avatar
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    Quote Originally Posted by mooseontheloose View Post

    (I'd post the image but my scanner doesn't allow for resizing to APUG limits)
    -- warning, borderline APUG appropriate response to follow --

    Take the image from your scanner (scan as a TIFF, not JPG so you don't start out lossy). Perhaps 150 or 300 "dpi". Then use something like TheGimp to resize it and compress for upload. TheGimp is free, Google for it. Lots of other software can do this too, but TheGimp is a good, FREE, substitute for Photoshop.

    -- end warning --
    Don't sweat the petty things and don't pet the sweaty things! http://rwyoung.wordpress.com

  3. #3
    Photo Engineer's Avatar
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    Could be something wrong with the developer.

    PE

  4. #4
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    I've been using ILWT a lot lately for lith..about same color I get from Varycon but smoother, no occassional banding and no peppering.

    I use Maco at bottle solutions and now Arista lith at same.
    Could be the longer dev times, but surely Wolfgang will chime in...
    Matt's Photo Site
    "I invent nothing, I rediscover". Auguste Rodin

  5. #5
    mooseontheloose's Avatar
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    I'm sure it has everything to do with the old, diluted, hot, mature developer! I just thought it was interesting because out of all the papers out there that lith, I never heard of pepper fogging on Ilford warmtone.

    Of course, this is just my interpretation of it -- I've been all over Tim Rudman's book (again) on lith printing and it seems the most logical explanation.

  6. #6

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    If you are starting with a significant amount of the old developer, there is probably enough bromide in solution that you don't need to add more to the new tray. 22 minutes is a long time in the pan, and it sounds like development is being restrained.

    I have found a fairly reliable way to trouble-shoot the developer . . .helpful but not fool proof. I start with 50-50 fresh developer and Old Brown, so there's the developer, the bromide and the semiquinone. As for chemical variables, that only leaves the paper (assuming it's lithable) and the sodium sulfite. Drop a test strip into your developer, with the lights on. Watch for a minute or so, then sprinkle a pinch sodium sulfite over the paper. If it goes infectious when the sulfite hits it, there you have it. This trick hasn't solved all my problems, but I find it more expeditious than titrating chemicals just on a hunch. Although that can be fun, too.

  7. #7
    Wolfgang Moersch's Avatar
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    Hello Rachelle, I have tried to give you an answer in the Gallery. With examples it is clearer I think.
    http://www.apug.org/gallery/showphot...=35340&limit=1

  8. #8
    rst
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    Quote Originally Posted by Wolfgang Moersch View Post
    Hello Rachelle, I have tried to give you an answer in the Gallery. With examples it is clearer I think.
    http://www.apug.org/gallery/showphot...=35340&limit=1
    Just to be sure that I understand these examples right, these examples are from a direct lith development in hot lith or are they redeveloped in lith after bleach of a standard print?

    Thanks and ciao
    -- Ruediger

  9. #9
    Wolfgang Moersch's Avatar
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    Moin Ruediger

    direct lith at room temperature in SE5 with a small additional amount of bromide and sulphite

  10. #10
    rst
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    Thanks Wolfgang,

    I will give it a try. The top right looks promising for some of my last negatives.

    All the best
    -- Ruediger

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