[pure-silver] Re: donuts on prints
- From: Jim Brick <jim@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 08 May 2007 22:38:20 -0700
Looks like Isaac himself is alive and well.
Jim
At 09:31 PM 5/8/2007 -0500, Shannon Stoney wrote:
Yet another weird mystery in the darkroom....
Today I noticed that there are these light-colored donuts right in
the center of the prints I was making yesterday. They are Holga
panoramas, so I was printing a five inch strip of 120 film by laying
it on the glass negative carrier that's for 8x10 negatives. It has
frosted glass, I guess to prevent newton rings or something. But
now there are these other kinds of rings!
I was using the 135mm enlarging lens, which appeared to cover the
negative fine. I had it stopped way down to f/32 though, because
the head had to be so close to the print to make it only 12" long.
The head is a diffusion head.
Is it possible that this frosted glass is creating this problem? I
have used it before and never noticed it before.
Another clue: I cleaned the frosted glass with Windex before
printing. I think I got it all dry. But it's possible it was
slightly dampish when I was printing. I printed three negative
strips, and all three sets of prints have this strange anomaly on them.
You can see the phenomenon here:
http://www.flickr.com/photos/shannonstoney/490698167/
My partner said I should just say it was a picture of nuclear winter
in Houston.
--shannon
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