JD-4 for pfg-o3m film
On: Wed, Dec 26, 01 12:59:08 AM
Dooley wrote:
| <![CDATA[Has anyone used the new JD-4 developer for pfg-03? It
claims to make the film as sensitive as pfg-01 I am just
curious to see if their claims are acurate and if it effects
the final quality of the hologram compaired to those
developed in the traditional GP-2 developer.]]> |
RESPONSES
Tom B. - Sat, Dec 29, 01 07:24:51 PM
<![CDATA[Have not heard of this one - where did you see it?
Sounds too good to be true, but it would be nice if so.
]]> 24.67.253.203
Dooley - Sun, Dec 30, 01 12:10:32 PM
<![CDATA[Integraf sent it with my Christmas present they do not sell
GP-2 anymore but only sell JD-4 they claim that they will
phase out GP-2 eventualy. I havn't used it yet cause I
still have some GP-2 but soon I will try it out and see what
happens. In the instructions they say that it is a modified
version of bb-640 developer consisting of a two
part developer and bleach it also says that you only nead to
develop for thirty seconds to one minute with sensitivity
equal to that of pfg o1!! will just have to see next time I
am in my laboritory.]]> 207.32.33.94
Colin Kaminski - Sun, Dec 30, 01 05:57:55 PM
<![CDATA[I am told there will be a paper published in Jan. And then
this will all be public information.]]> 64.167.149.245
Dooley - Tue, Jan 22, 02 01:52:30 AM
<![CDATA[Finaly got around to doing a hologram on a 4X5 plate, and
used the jd-4 developer. Using the D&S laser with the 35mW
diode I exposed for about one second then developed the
pfg-03 plate using the JD-4. This is less than a third of
what I was exposing the 2.5 in plates. A hologram did turn
out but it was a very deep red, and not very bright. I may
have underexposed the plate. I havn't had much experience
with the pfg-o3 plates so I am asking those with experience
if a deep red with these plates means underexposure? If so
I was also underexposing the 2.5 In. plates as well with a
three second exposure with the gp-2 developer. My next
trial will be to expose for three seconds and develop with
the JD-4. Considering that I switched from a 2.5 in to a
4X5 in. plate and cut the time by three and got a very
compairable hologram JD-4 does increase the sensitivity of
the film. It also cuts the development time down to a few
minutes, as well as having a separate bleach which alows for
a clear plate after bleaching. If anyone else has been
using this dev. please give some guidelines for the final
color of the hologram ie. deep red- underexposed? ]]> 207.32.33.91
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