Re: sripes on HIE with Bronica

[Don Roberts <droberts@xxxxxxxxxxxxx>]

Here I sit scratching my head.  My first guess would be watermarks or drying marks.  I
have had trouble with those even with Photoflo on HIE.  If you dried the film hanging
vertically it's not as likely but coudl happen.  If you dried the film on the reel
perhaps sitting horizontally then I'd say that is a very probable cause.  I have just
checked my last roll of HIE through the 135W and can't find any marks so I don't think it
is stress marks.

Cameron Shaw wrote:

> Thanks for your reply, the stripes are vertical in landscape, that is they run from
> sprockets on one side of the film to the other at about the same frquency as the
> sprockets, so one frame, approx 25mm by 56mm would have about 11 stripes.
> Looking at the negatives it is difficult to judge  but they appear to be possibly
> lighter density stripes about 3mm to 1mm  wide on the negative which is very
> strange. You can see the picture through the stripes so maybe they are wider
> darker sripes and the lighter areas are the gaps between them. I plan to expose a
> roll of HIE with a lightproof bag taped over the whole of the camera back, to test for
> light leaks. If not then could they be mechanical stress marks caused by the very
> small radius at one point in the film path of the Bronica 135wide back?
> Cameron.
>
>
> On Mon, 15 Jun 1998 07:54:00 +0000 Don Roberts wrote:
>
> > Cameron, while I can't identify the cause of your stripes now I can say that it is
> not
> > from dark slide slot as that would give you streaks parallel to the film which runs
> > horizontally.  I also use that camera and back as well as a 70mm back for IR and
> have
> > not encountered the problem yet.  You don't say whether the stripes are black on
> the
> > neg as a light leak would be or light which  would indicate a different type of
> > problem.  Are they thin, thick or uneven?   Are they visible as a scratch would be?
> > Tell us more and maybe we can help.
> >
>
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- --
==========================================================
  Don Roberts * Bittersweet Productions * Iowa City, IA
            *                    *
"Ignorance is not bliss - it is oblivion." - Philip Wylie
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