JD-4 PFG-03 VS. JD-2 PFG-01
On: Thu, Feb 21, 02 11:05:43 AM
Dooley wrote:
After testing the pfg03 film with the new JD-4 developer I
found that it does indeed sensitize the film to the point
that it is more sesitive than the pfg01. For a direct
compairison I used 4X5 plates with the D&S laser. I exposed
the pfg01 for 4 seconds and got a wonderful hologram. I
then used the 4X5 pfg03 plates and exposed for 5 seconds
wich resulted in overexposure! I then reduced my time to
about 3 and a 1/2 seconds and got a wonderful hologram with
the pfg03!!! With the same object the pfg03 with the JD-4
developer was actualy more sensitive than the pfg01 with
JD-2 developer!!!!!!!!!! The difference in quality is
unbeleivable Dr. Jeong could be right. This could make
pfg01 film obsolete. |
RESPONSES
Jonathan - Thu, Feb 21, 02 01:42:51 PM
Dooley, what bleach formulation did you use in each case?
How did the storage times, and storage temperature, compare
between the two types of plate you used?
Also, if you don't mind my asking, how is your D&S laser
mounted (i.e. heat sink of some sort?) Thanks. 209.90.161.35
Colin - Thu, Feb 21, 02 02:55:36 PM
Tom,
What is the indicator for over-exposure? Is it the same as
JD-2 where you can tell by the final color? Or is TEA
required to change colors. Have you tried a transmission
hologram yet? 64.170.195.85
Dooley - Thu, Feb 21, 02 05:45:32 PM
I wasn't exactly that scientific about my experimentation
laser reflections is doing a more scientific study if I have
been informed correctly. As for the bleach I used the
bleaches that come standard with the JD-2 and the JD-4.
Both batches are about the same age and were simply stored
in a cold basement corner. Not the best situation but
better than in the heat. My D&S laser is just mounted in
the recomended barrel, nothing fancy, with a car battery to
power it. As for overexposure it looks as if you just get a
very dim image, or no image with the jd-4. TEA is required
to change the color, and no I havn't tried a transmission
hologram, just reflection. 207.32.33.92
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