Re: Pinholes - after the fact

["Elton N. Kaufmann - Cycloid Fathom Group" <cycloid@xxxxxxxxxxxxxxxxxx>]

>From: Bill Agee <billagee@xxxxxxxxxxxxx>
>,,, I think
>>it's purely a matter of proper agitation. After pouring the developer
>>into the tank it's of paramount importance to agitate at least for 30
>>seconds and bang the tank on the table. Also never turn the tank up side
>>down since this will cause a lot of air bubbles on the film surface. See
>>my homepage and read how I treat my HIE succesfully. Greetings, Jaap
>>Los
>
>
>Exactly my feelings. I use the same agitation technique.  Presoak and good
>agitation works wonders.
>
>Bill Agee
>
>The fellow that posted from England (was it?) mentioned that the 
>water contained iron.  Perhaps  iron could lead to a redox reaction 
>with the silver halides and cause those tiny holes in the emulsion. 
>I am still thinking about the possibility of chlorine in the water.
>I've only experienced the effect twice and it was after I moved to
>San Gabriel and used tap water. 
>
>Distilled water solved the problem for me.
>
>Perhaps a phone call to KODAK's 800 number is in order.  I'll try
>calling them Monday morning.
>
>Thomas Hank Hogan


Re: agitation - I do believe I do  agitate enough but I also do invert the
tank.  The tank gets rapped on the sink after each agitation and I have
never had an air bubble problem on normal films.  Actually, the pinholes in
the HIE don't appear to be due to air bubbles - they often have feathered
edges and are not always circles.  

Re: Kodak - As it happens I did call Kodak just today.  I described my
procedures in detail and they said nothing I was doing should cause
pinholes.  They asked me to send them a sample neg and the batch number of
the emulsion.  Before I part with a neg, I'll call them with the batch
number to see if they've had other reports.  The worst problems have
occurred in batch 2801 (with a "process before" date of 01/1998).  Guess
it's old with that date, but I keep it refrigerated until it goes in my
bag, so I assume the date is not a problem.

								EltonK

Exhibiting fine-art and editorial photography
Cycloid Fathom Gallery
Elton N. Kaufmann, Chairman
P. O. Box 8129
Downers Grove, Illinois 60517-8129
USA
cycloid@xxxxxxxxxxxxxxxxxx
http://www.cycloid-fathom.com/gallery/
ftp.cycloid-fathom.com/group/uploads/

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