From: Rocky (rocky@pdq.net)
Date: 07/17/02-05:18:15 PM Z
Check the XTOL.PDF on Kodak web site for info on development of Tri-X.
Or if you wish I'll email it to you as an attachment (not allowed on list)
off list.
Rocky
Houston, TX
----- Original Message -----
From: "Shannon Stoney" <shannonstoney@earthlink.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Wednesday, July 17, 2002 6:11 PM
Subject: Re: HP5+ and LONG development times
>
> >
> > You might try Xtol. This contains milder developing agents that you
would
> > probably not be sensitive to. Also Steve Anchell says HP4 and Xtol is
the
> > best B&W combo available in terms of tonal range.
>
> Do you mean HP5 or FP4? I would like to try Xtol. Today I was looking at
> the Kodak site and they didn't list it as a recommended developer for Tri
X,
> but that doesn't mean, I guess, that it doesn't work. When I run out of
D76
> maybe I'll try some.
>
> I can tolerate D76 if I'm careful.
>
> --shannon
>
> >
> > Bob Schramm
> >
> >>From: Shannon Stoney <shannonstoney@earthlink.net>
> >>Reply-To: alt-photo-process-l@sask.usask.ca
> >>To: alt-photo-process-l@sask.usask.ca
> >>Subject: Re: HP5+ and LONG development times
> >>Date: Wed, 17 Jul 2002 08:16:19 -0700
> >>
> >>Thanks for this info. I'm not quite ready to use pyro as I am very
> >>sensitive to photographic chemicals and I'm afraid it's too toxic for
me.
> >>Maybe if I ever get a jobo processor and don't have to deal with
splashing
> >>developer too much...I will look at Sandy's article though for future
> >>reference.
> >>
> >>Maybe I should switch back to Tri-X, my old favorite, although I would
have
> >>to buy it in boxes of 50.
> >>
> >>--shannon
> >>
> >>
> >>
> >>----------
> >> >From: Clay Harmon <wcharmon@wt.net>
> >> >To: alt-photo-process-l@sask.usask.ca
> >> >Subject: Re: HP5+ and LONG development times
> >> >Date: Wed, Jul 17, 2002, 4:55 AM
> >> >
> >>
> >> > Shannon:
> >> >
> >> > Hp-5 is notorious for reaching so-called 'gamma infinity' quickly.
That
> >>is
> >> > where at some point, additional development does not increase the
> >>contrast,
> >> > but only adds additional base+fog density (not desirable!) . You may
> >>need to
> >> > use a staining developer such as PMK, rollo pyro or Pyrocat-HD, which
> >>will
> >> > give a proportional (to silver density) UV blocking stain in the
> >>highlights
> >> > and behaves like additional density when printing UV sensitive
> >>processes.
> >> >
> >> > I use HP-5 with pyrocat-HD all the time in my big cameras and it
works
> >>fine
> >> > with a density range of about 1.3-1.4. The stain actually makes the
> >> > effective density range more like 1.8-1.9. Pyrocat times for the
density
> >> > range you're looking for would be about 11-13 minutes at 75 degrees.
> >>Check
> >> > out the Sandy King article at www.unblinkingeye.com for all the info.
It
> >> > also is one of the cheapest developers around, and is pretty easy to
> >>mix.
> >> >
> >> > Staining developers are about the only way to go with HP-5 for
alt-photo
> >> > density ranges, unless you only shoot really high contrast scenes.
The
> >> > pinhole may be making your efforts a little harder also because of
> >>internal
> >> > flare.
> >> >
> >> > Clay
> >> >
> >> > on 7/17/02 12:48 AM, Shannon Stoney at shannonstoney@earthlink.net
> >>wrote:
> >> >
> >> >> I am shooting HP5+ in the 8x10 format in a pinhole camera for
> >>cyanotypes. I
> >> >> am having trouble getting the highlights dense enough. I am up to a
20
> >> >> minute development time now, and still the highlights only have a
> >>density of
> >> >> 1.71. I would like a density range of about 1.6, starting at 0.35,
> >>say, in
> >> >> the shadows. (I have to shoot it at like 3200 to get the shadows
this
> >> >> thin!) Should I keep increasing the development times? Is it "bad"
to
> >>go
> >> >> over 20 minutes? I process in straight D-76 in a homemade
BTZS-style
> >>tube,
> >> >> at 68 degrees. I am thinking maybe I should make the temperature
warmer
> >> >> rather than making the times longer. But, then what will I do if I
> >>ever
> >> >> have to increase the development time further for a low-constrast
> >>scene?
> >> >> (Excuse the cross posting if you read
> >> >> the pinhole and alt-process lists.)
> >> >>
> >> >> --shannon
> >> >>
> >> >
> >> >
> >> >
> >
> >
> > Check out my web page at:
> >
> > http://www.SchrammStudio.com
> >
> > also look at:
> >
> > http://www.wlsc.wvnet.edu/www/pubrel/photo.html
> >
> > _________________________________________________________________
> > Send and receive Hotmail on your mobile device: http://mobile.msn.com
> >
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