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  1. #1
    eric's Avatar
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    Look ma! No pinholes! (JandC Pro 100)

    Did 2 rolls of JandC Pro 100 120 film last night. Looked at them (not contacted sheet yet but it appears that I didn't have pinholes. What I do different? I don't know. I think I only presoak (I did them in PMK so I usually presoak) for less than a minute. Maybe that did it.

  2. #2
    bobfowler's Avatar
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    I had a pinhole problem with Pro 100 only once - and it was my fault. I mixed the stop bath waaaayyy too strong. Hasn't happened since.
    Bob Fowler
    fowler@verizon.net
    Some people are like Slinkies. They're really good for nothing, but they still bring a smile to your face when you push them down a flight of stairs.

  3. #3
    djklmnop's Avatar
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    I only experienced the so-called pinhole problem on their sheet films.. I imagine roll films were manufactured differently. But what I had were not really pinholes, they look more like skid marks. Seemed as if there were fixer on the roller transport or something. So I do think that the pinhole issue is due to excessive stop bath, but am I the only one getting those skid marks on my sheet films? I'll have to test further..

    Andy
    Money is not the problem. The problem is, I don't have any.

  4. #4
    eric's Avatar
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    Quote Originally Posted by jdef
    The diabolical thing about J&C Pro 100 is that you might get two rolls without defects, but attributing that fact to your process is virtually impossible. The best that we can do is to follow J&C's guidelines for processing this film, and hope for the best. Good luck.
    Jay
    Oh man, now you are making me nervous

    I'll contact them tonight...after I check the kid's homework, make dinner, clean up, make sure they take showers, put them to bed...10pm....zonk....

  5. #5
    Will S's Avatar
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    I've done at least 20 rolls of 120 j&c 100, and I've never had a problem. However, I use a water stop bath (no acid) with pyrocat-hd semi-stand. I guess I've just been lucky....

    I have had missing emulsion on HP5+ though. Once on the entire roll and once just on about 3" of the film. It had to be from something in the production line.

    Best,

    Will
    "I am an anarchist." - HCB
    "I wanna be anarchist." - JR

  6. #6
    Donald Qualls's Avatar
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    I've had one roll with bubbles that didn't quite perforate into pinholes, and one without a trace of problem (the latter with water rinse in place of acid stop bath, but still my usual acid fixer). I'll know a lot more soon, though; I have three more rolls waiting for development, which I hope to load in tanks today and develop in the next few days. If those, too, are free of problems, then I'll be confident enough to switch to a neutral fixer and use a lot more of this film.
    Photography has always fascinated me -- as a child, simply for the magic of capturing an image onto glossy paper with a little box, but as an adult because of the unique juxtaposition of science and art -- the physics of optics, the mechanics of the camera, the chemistry of film and developer, alongside the art in seeing, composing, exposing, processing and printing.

  7. #7
    eric's Avatar
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    Quote Originally Posted by Donald Qualls
    though; I have three more rolls waiting for development, which I hope to load in tanks today and develop in the next few days. If those, too, are free of problems, then I'll be confident enough to switch to a neutral fixer and use a lot more of this film.
    Contact printed the negs last night. Looks good. No pinholes. Just dust from my glass contact printer.

    Still, even a hint that there MIGHT be pinholes in next rolls, I still love it in my toy cameras.

  8. #8
    Donald Qualls's Avatar
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    I find it encouraging that J&C haven't been able to reproduce the pinholes with their suggested process (though not so encouraging that they don't, as far as I can tell, *tell* us anywhere that they recommend water stop and non-acid fixer to avoid overstressing the gelatin, or even that the film is a soft emulsion, until we come here and complain about the defects). I still haven't got those 3 rolls developed -- though they are loaded in tanks, sitting by the sink, waiting. Probably be able to do them tomorrow -- got too much other stuff demanding my time today.
    Photography has always fascinated me -- as a child, simply for the magic of capturing an image onto glossy paper with a little box, but as an adult because of the unique juxtaposition of science and art -- the physics of optics, the mechanics of the camera, the chemistry of film and developer, alongside the art in seeing, composing, exposing, processing and printing.



 

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