From: Nick Makris (nick@mcn.org)
Date: 11/02/01-04:00:51 PM Z
Carl,
I am getting good rich blacks in the border area. I just can't even come
close to matching it in the neg area, no matter the exposure.
As for the paper, it's the same old Cranes, I think I've got the coating
figured out after a few years at this, the humidity is up slightly from 64%
to 69% and as I said, I also changed my developer with no benefit. I can't
believe the sensitiser is at fault otherwise I wouldn't get any deep rich
black at all.
I suppose I could try 10 or 12 minutes, but the rich borders come out at 3
min. There is only a two stop difference between no B+F and B+F. It could
be that the Epson Backlight film (that's what I am using) has some UV
filtering effect. I may have to resort to some other substrate in order to
obtain my goal of good density/exposure throughout the range.
Nick
BTW, what's IOW?? It's not on my list of abbreviations.
----- Original Message -----
From: "Carl Weese" <cweese@earthlink.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Friday, November 02, 2001 12:38 PM
Subject: Re: Platinum/Paladium testing
> Nick,
>
> Under normal circumstances (whatever they are) even two-three minutes
> exposure to UV tubes should give a rich black tone to "border" areas. The
> tubes certainly shouldn't be gone with that little use, though I'm
familiar
> only with standard GE BL tubes, not actinics. Something could be wrong
with
> the paper, the coating procedure, the humidity level you are working at,
> etc, etc. IOW, it looks like there is a basic problem that has nothing to
do
> with the negative you are testing. How old are your chemicals, could they
> have been contaminated, what coating procedure, what humidity, what
paper??
>
> ---Carl
> --
> web site with picture galleries
> and workshop information at:
>
> http://home.earthlink.net/~cweese/
>
> ----------
> >From: Nick Makris <nick@mcn.org>
> >To: alt-photo-process-l@sask.usask.ca
> >Subject: Re: Platinum/Paladium testing
> >Date: Fri, Nov 2, 2001, 3:10 PM
> >
>
> > Carl, I was hoping to catch your interest, many thanks for the response.
> > Your concern for the adverse affects of chlorate may be correct in some
> > circumstances, however consider that on other tests in this series, with
> > exactly the same parameters except:
> >
> > One with 0 PC and 0 PT the blacks were somewhat flat.
> > One with 0 PC and 1 PT the blacks were also somewhat flat.
> >
> > Also, since my post earlier today, I made another test in which I
extended
> > the exposure to 7.5 minutes without getting any closer to maximum
density.
> > This is somewhat confusing.
> >
> > I also changed my developer only to find that I now have slower speed in
the
> > sensitiser.
> >
> > Could my Super Actinic bulbs be going out???? They are about 2 years
old
> > and I probably have made less than 100 prints with them. That might
account
> > for my unanticipated change in density - recall that I wrote:
> >
> >> For no apparent reason, a specific time I was using was no longer
> > producing the same density
> >
> > Thanks again,
> >
> > Nick
> >
>
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