RE: Potentially stupid pt/pd question

[EJN Photo <ejnphoto@sbcglobal.net>]

Camden, I did call Michael Ginsberg and the Rag in the smooth version was
indeed discontinued. It was just a slow mover. 

Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
214-827-8301
http://ericneilsenphotography.com
 
Skype : ejprinter


> -----Original Message-----
> From: Camden Hardy [mailto:camden@hardyphotography.net]
> Sent: Monday, October 16, 2006 10:13 AM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Potentially stupid pt/pd question
> 
> Eric,
> 
> Thanks for the information.  I'll be doing some more tests
> tomorrow
> morning to see if I can get better results under a few
> different
> conditions.  I suspect the problem is that I'm allowing the
> emulsion to
> absorb into the paper too much, so I'll play around with heat
> and
> humidity.
> 
> I'll let you know how it works out.
> 
> 
> Camden Hardy
> 
> camden[at]hardyphotography[dot]net
> http://www.hardyphotography.net
> 
> 
> 
> 
> On Sun, October 15, 2006 11:04 pm, Eric Neilsen wrote:
> >
> >
> >
> >> -----Original Message-----
> >> From: Camden Hardy [mailto:camden@hardyphotography.net]
> >> Sent: Sunday, October 15, 2006 2:44 AM
> >> To: alt-photo-process-l@usask.ca
> >> Subject: RE: Potentially stupid pt/pd question
> >>
> >> > Camden,  This is NOT the witness protection program, so it
> is OK to
> >> say
> >> > the
> >> > name of the dealer.
> >>
> >> True.  However, I've always had great experiences with this
> company, and
> >> the last thing I want to do is badmouth them on the alt
> photo list.  I'd
> >> like to think it was an isolated incident, which it may or
> may not be,
> >> and
> >> move on.  If I have any future troubles with this merchant,
> I'll let
> >> everyone know.  Until then, I'll keep their name anonymous.
> >>
> >> As far as the paper itself goes, the coventry vellum is
> actually quite
> >> nice in terms of look and feel.  As long as I can get a
> decent print
> >> with
> >> it, I'll be happy.  :)
> >>
> >
> > You may have gotten good service before and you'll probably
> get good
> > service
> > in the future, but in the process of withholding the name,
> you may be
> > setting someone else up for poor service in regards to
> papers.
> >
> >
> >>
> >> > Dmax is influenced by more than one factor; blend of PT
> and PD,
> >> humidity
> >> > of
> >> > paper during exposure. Palladium IS FASTER at high
> humidity and
> >> Platinum
> >> > is
> >> > faster at LOWER humidity. (That's why it is best to
> include a coating
> >> > mixture when asking for help)
> >>
> >> I didn't know the ratio of pt to pd made a difference in
> dmax, although
> >> it's not all that surprising to me.  I've been using Dick
> Arentz's pt/pd
> >> contrast mixtures, and in this case the 2s mixture.  This
> translates to
> >> a
> >> ratio of 6 pd:6 ferric oxalate:1 Na2 (5%).
> >>
> >
> > So other than the Na2, there is NO PT in your prints. The
> ratio (or use of
> > or not) can help to say why you are seeing a particular
> effect; like
> > reverse
> > of the blacks with only PD. The blend of PT and PD, along
> with humidity,
> > will produce a print that has certain speed and contrast
> characteristics.
> >
> >
> >>
> >> > Properly used heat will stop the coating solution from
> soaking into
> >> the
> >> > paper.
> >>
> >> What exactly do you mean by properly used heat?
> >>
> >
> > Properly used the heat will stop the penetration of the
> coating solution
> > into the paper with no fog or grain. Improper use can cause
> fog by cooking
> > the paper with an airstream that is too hot.
> >
> >
> >>
> >> > If a paper clears more slowly than others that you use,
> just make sure
> >> and
> >> > give it the required time or solution concentration, that
> is the only
> >> > concern. It is possible to make too strong of a clearing
> bath just
> >> like
> >> it
> >> > is possible to leave it too long in the tray. : (
> >>
> >> Could you elaborate on this?  What are the consequences of
> each?  Which
> >> do
> >> you think I should stick with?  Is there an easy way to tell
> which is
> >> the
> >> better choice for this paper, aside from appearance (from an
> archival
> >> standpoint)?
> >>
> > You can find out what is in the paper and judging by your
> experience with
> > your distributor, I'd call Legion directly or look it up on
> the web site
> > but
> > I don't know if they have it up on the site.
> >
> > You can soften the paper and make it extremely hard to handle
> without
> > damaging either the whole piece or opening up the door for
> surface
> > abrasions.  If you are using an acid bath to clear, you may
> damage the
> > paper
> > leaving it hard and brittle.
> >
> >
> >
> >
> > Eric Neilsen Photography
> > 4101 Commerce Street
> > Suite 9
> > Dallas, TX 75226
> > http://e.neilsen.home.att.net
> > http://ericneilsenphotography.com
> > Skype ejprinter
> >
> >
> >