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  1. #21
    cliveh's Avatar
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    Don't pre-soak the film and don't use wetting agent. Try de-ionised water and keep things simple.

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  2. #22

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    I have to agree with Maris that this sounds like a problem occurring during film drying. If the foaming was causing a problem, it would affect more than one frame. It tends to cause marks all along the edge of the film that was uppermost in the tank. I get foaming to a greater or lesser degree in my Paterson tanks. Im not sure what causes it, but thorough cleaning and bleaching for more than 24 hours has not removed the problem. I tend to use larger volumes of developer per film, and I don't see any adverse affects on the film. I do, however, get the marked last frame, and will try 45 degree drying. There was a thread about this before, I think referring to Photoflo in the title. I'm sure someone pointed out that some developers contain chemicals that have a tendency to foaming. I now just try to ignore it.
    Alex


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  3. #23
    AgX
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    Quote Originally Posted by AgX View Post
    But why not horizontally (lengthwise) then? Would make even more sense in your concept.
    I guess the idea is to use the lower long edge as guide for any excessive fluid.

  4. #24
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    Quote Originally Posted by Pat Erson View Post
    @ Maris : I had stains on my negs because of the foaming during the developement, not because of improper handling during the drying stage (yep the foaming was that bad between agitation cycles i'd remove the lid of my tank and "ssssssshhhhhhh" foam would pop out).
    Yes, I've had that too. My answer was to use a bigger volume of developer. For example my Paterson tank asks 500ml to cover a 120 roll film. I use 600ml so that the foam layer is at the top of the developer pool and the film at the bottom of the tank is below the foam layer. The film and the foam meet only during agitation and the effect is momentary and uniform across the picture area. When I encountered last frame schmutz it was definitely due to hanging the film vertically and giving the bubbles no place to dry except on the last frame.
    Photography, the word itself, invented and defined by its author Sir John.F.W.Herschel, 14 March 1839 at the Royal Society, Somerset House, London. Quote "...Photography or the application of the Chemical rays of light to the purpose of pictorial representation,..". unquote.

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