Gary Miller (gmphotos@earthlink.net)
Tue, 15 Jun 1999 23:53:16 -0700
> Adam;
>
> I have been using a Jobo Expert Drum for my 8x10 Film on a Beseler base.
I
> am processing Berger 200 (EI 100) in Rollo pyro for 9 mins (total time
with
> filling time of about 20 secs included in this figure) at 70 F. I use the
> Jobo on reverse agitation, unlike Kerik's use of continuous agitation
only.
> I experimented with switching from reversing agitation to continuous
> agitation and back, and found no appreciable difference in the results.
So
> I put the tank on the base and let it reverse agitate on its own for the
> full development time without touching it. I do not switch the tank from
> one end to the other either. It does not seem to matter that the drum
will
> not do a complete rotation. I think because of the design and the amount
of
> solution that fills each of the five separate chambers that it really does
> not need to do a full rotation and the beseler base, at least mine,
> introduces some wobble into the tank thereby helping with random agitation
> patterns. All of my developed film has had good stain and a good stain to
> silver ratio. I am developing mostly for use in Pt/Pd/Zia so I tested the
> contrast of the negative by contact printing in on variable contrast paper
> in a cold light enlarger with no filter. If the contrast looks correct
for
> a regular number 2 filtered print on VC paper, then I know that the pyro
> developed negative will print well on Pt. All the anti-halation backing
has
> been removed, and development is totally even and consistent. Your
results
> may vary so a little testing is apropos. I would be curious if you tried
> developing some of your film first with reversing agitation and then the
> same shot with continuous agitation. Like so many things in alternative
> process everyone's experience can be very different. Good luck;
>
> Gary Miller
>
> >
>
This archive was generated by hypermail 2.0b3 on Thu Oct 28 1999 - 21:39:37