[pure-silver] I thought I remembered seeing something like this
- From: Jeffrey Thorns <puresilver@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 27 Mar 2007 19:46:27 -0700
http://glennview.com/jpgs/omega/vddd/big_1.jpg
LIGHT BALANCING DIFFUSION DISK, for Omega or Beseler, 6 7/16"
diameter, thicker in the center, simply replace your condensers with
this or place this above or below your condensers or replace the opal
plastic diffusion disk supplied with your Aristo or Zone IV cold
light head. Think you don't need it? Guess again. Make a flash test
by focusing on the negative plane and making a midtone grey print
with no negative in the enlarger. You'll probably find that you have
a serious hot spot in the center. This light balancing filter is a
new item made by Glennview, available nowhere else, $50. Similar item
in 5X7" format, $200. Similar item for Aristo model 810 cold light
head, 8.75X10.75" in size, the largest size I can make, $350. Expect
1-2 stops less light ouput with this diffusion disk. I have one 2nd
quality light balancing diffusion disk for Omega or Beseler with a
chipped edge that may be placed outside the image area available for
$35.
from http://www.glennview.com/omega.htm
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