Re: gum negatives redux

[Paul Viapiano <viapiano@pacbell.net>]

1st layer: Burnt umber   5 1/2 minutes

2nd and 3rd layers: Raw umber   2 1/2 minutes    (1 gr pigment / 2 ml gum) 
Is this concentration high enuff?

I think 2 1/2 min is not enough time with these Pd negs...I'm thinking 3 1/2 
m

p





----- Original Message ----- 
From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@usask.ca>
Sent: Saturday, September 12, 2009 5:30 PM
Subject: Re: gum negatives redux


> Yeah, I'd say hit it with a really heavy pigment concentration for a 
> short time for darker shadows.   What's your pigment?
> kt
>
> On Sep 12, 2009, at 5:00 PM, Paul Viapiano wrote:
>
> > Well, not finished yet...needs some more shadow work...but...
> >
> > http://wwwflickr.com/photos/viapiano/3913318805/
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: Jeremy Moore
> > To: alt-photo-process-l@usask.ca
> > Sent: Saturday, September 12, 2009 4:34 PM
> > Subject: Re: gum negatives redux
> >
> > Any scans or shots of the images? There has been a dearth of new  alt 
> > prints in my life as of recent.
> >
> > On Sat, Sep 12, 2009 at 2:42 PM, Paul Viapiano  <viapiano@pacbell.net> 
> > wrote:
> > I should've been more clear...I'm getting better gum results from 
> > palladium negs than using less contrasty negs for gum. My palladium 
> > prints print wonderfully with the palladium negs ;-)
> >
> > This would be a huge advantage for me, in not having to keep track  of 
> > two different styles of digital negatives.
> >
> > Now, I'm wondering how the palladium negs will work with tri-color 
> > gum...only one way to find out!
> >
> > Paul
> >
> >
> >
> > ----- Original Message -----
> > From: "Paul Viapiano" <viapiano@pacbell.net>
> > To: <alt-photo-process-l@usask.ca>
> > Sent: Saturday, September 12, 2009 12:20 PM
> > Subject: gum negatives redux
> >
> > > Hi all...
> > >
> > > I'm getting much better results using my QTR inkjet palladium
> > negatives for
> > > pure gum purposes. Detail is much sharper with these contrasty
> > negs and I'm
> > > getting a pretty full range of tones.
> > >
> > > Exposures with 1:1 gum/dichromate ratio (pot di) are 6-7 min for
> > highlights,
> > > 2 1/2 min for shadows and mids somewhere btw those.
> > >
> > > This is for exposure in full blazing blue sky sun, Southern
> > California
> > > style.
> > >
> > > Still adjusting and experimenting, but happy to have a printing
> > day that is
> > > not frustrating ;-)...of course, it's not over yet.
> > >
> > > Paul
> > >