Dennis,
I have wrestled with this problem in the past. Last summer my wife dragged me off on an Alaskan cruise, and I took about a dozen pinhole panoramics on Ilford MGIV RC paper. It was nearly a week before
I developed them (in Dektol) and they all came out nearly black -- the only negatives I have ever had to do this.
I am sure that paper emulsions, unlike film emulsions, are not designed for extended excursions between the enlarger and the developing tray. Therefore, I shot another negative, cut it in half,
developed one half and waited a week to develop the other half. In my test the second half did come out slightly darker, but the effect was so slight that it could have been due to change in developer
activity or some other such darkroom inconsistency.
Anyway, I was convinced that the one week delay in processing did not cause my problem, but I never looked any further into what kind of time delay could affect paper. Maybe every 25 years we could
sneak down into Guillermo's crawl space and snip off a piece of one of his negatives for a test ;-) .
Bob
> On Monday, July 30, 2001, Dennis Johanson wrote:
> > In order to rationalize (not a word that comes naturally when speaking about pinhole photography) the handling of my pinhole photography I hope that someone could be kind enough to help med with
> > the following:
>
> > How long can exposed photo paper used as negative be stored before processing?
>
> > Any special storage requirements?
>
> > Good shooting!
Received on Thu Aug 2 22:58:38 2001
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