RE: Pinholes in film base.

["Jason Revell (in5)" <jason.revell@xxxxxxxxx>]

From: Gary Hall
To: infrared@xxxxx
Subject: Pinholes in film base.
Date: Thursday, July 29, 1999 8:23PM

>Folks,
>
>As if we haven't beaten this dead horse enough, I was just reading a book
by Theresa Airey, "Creative Photo Printmaking".  She >mentioned that using
an acidic stop bath with HIE can cause pinholes in the film and that she
uses plain water to avoid this, >comments?
>
>Gary Hall
>gary_hall@xxxxxxxxxxxx


I agree with George.  Not the best book to follow to the letter.

Anway, I have only had this problem a couple of times over the last 6 years
or so, but I never use a acid stopbath (for different reasons) and have
always just used water.  So I can assure you water will not cure your
problem.  I believe it is much more likely to be a manufaturing fault.  When
I looked at the last sheet that had it on under a microscope at  x100 you
could see that the emulsion was either just not their or much thinner.  I
have always wondered if it is caused by bubbles in the emulsion during the
coating process.

Jason


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