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Re: pinholes


  • From: Greg Pease <gpp@xxxxxxxxx>
  • Subject: Re: pinholes
  • Date: Wed, 18 Jun 97 18:25:42 +0100

>These 'pinholes'
>do look very similar to dust but are not.

>always circular, totally clear
>in the middle but with defused edging.  The only way I can describe it
>better
>is that it was similar to the way mold looks when it grows, Strong in the
>center
>and then weaker as it spreads out.


This description is exactly the problem I asked about last week.


>Your analysis is consistent with what I've seen on 4x5 HIE.  I have
>heard other photographers put the blame on Kodak.  Some mfg problem. In
>my experience, not every box of HIE will have the pinholes.  Just most
>of 'em.  Definitely NOT dust spots.  And definitely a problem that Kodak
>should solve.


I have found since, that the spots do not show up when using the jobo 
processor.  I have processed 4 rolls of test film on 4 seperate days and 
no spots.  However they were on every roll that was processed by hand 
(some more that others). 


> with the jobo processing a new problem has =
>arrisen.  i am getting streeking running the length of the film.  it =
>looks like a water stain but can only be seen when printed.  normal =
>water stains can be seen by carefully examining the emulsion side of =
>the neg, but when i do so, i see nothing.  the lab thought it might =
>be a problem with kodak's photoflo so they switched to edwal's =
>lfn...same problem.  does anyone have ideas on wetting agents?>  =
>should we try it without?  could the streaks have something to do =
>with the constant uni-directional agitition of the jobo?

> After a lengthy discussion, =
>the man that processes the film confessed that he "may have let the =
>wetting agent dry on the film".  So i will run another test on monday =
>and make sure he squeegees the film before it dries.  I will get back =
>to you with the results asap.


So the above mentioned test was done and the wetting agent was wiped off 
berore it dried on the film, and the problem remains. Anyone have ideas?
Thanks
- -Greg Pease 
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