Re: Gum Tri-Color Yellow

Tom,

I'm not sure if I can answer your question better than Chris has. The yellow I use is usually Hansa
Yellow, and I almost never had to reprint it. However, I see nothing wrong if I had to reprint yellow
either, unless it makes everything a little too light, which means you'd have to go back and print yet
another color, at which time it all may start getting muddy and grainy and you tired and fed up - then it
may be better to just start all over again.

But don't throw the print in the trash. Many days or months later when you thought you would tear it up
and use it for bookmarks you might discover what you originally considered awful was actually a lot
more interesting than what you intended. So give it a rest. Give the print a chance to speak to you - not
everything needs to be perfectly color balanced. It happened to me a number of times.

Sam Wang

>
> From: "Christina Z. Anderson" <zphoto@uslink.net>
> Date: 2004/06/03 Thu PM 12:04:21 EDT
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: Gum Tri-Color Yellow
>
> Tom,
> Sam is the one to answer the cyano part of your question, although I do
> print it
> fully--if I don't, then I have to print another layer of blue on top of the
> tricolor-not a bad thing.
> I never have to reprint yellow so it could be you need more yellow in
> your mix, or, as Katharine says, the yellow is too light. If my images err
> on the side of imbalance, they are too yellow.
> Good way to test is double the pigment in your yellow mix for the next
> print, with all other variables the same, and see if that doesn't solve your
> problem.
> When I coat on my yellow coat, it is Ronald McDonald Yellow on the
> paper, even without dichromate. It looks horrible on top of the cyano layer,
> and when exposed I have this ugly greeny yellow print that looks like it
> won't resurrect, but then the magenta layer brings out all the colors
> correctly.
> Chris
> ----- Original Message -----
> From: "Tom Ferguson" <tomf2468@pipeline.com>
> To: <alt-photo-process-l@skyway.usask.ca>
> Sent: Wednesday, June 02, 2004 8:00 PM
> Subject: Gum Tri-Color Yellow
>
>
> > As my new gum project progresses, I'd love some comments on the yellow
> > layer of a tri-color gum. I'm basically trying Sam Wang's method
> > (cyanotype, then yellow gum, then magenta gum from digital negs). see
> > here:
> >
> > http://unblinkingeye.com/Articles/3CG/3cg.html
> >
> > First question: Yellow layer. The "Process" looking yellow paints are
> > giving me a normal DR and clear well. What they don't do is show the
> > individual steps well, I get more of a gradient than steps. I settled
> > on Rowney's "Permanent Yellow #664" (Quinophthalone Yellow PY138). The
> > image looks OK, but Yellow is always the color I have to reprint to get
> > the balance right. Is this normal, or am I using a poor paint choice.
> >
> > Second question: Is anyone using the full "D-Max" of the cyanotype? I
> > find it too strong for the gum layers, and have adjusted the curve and
> > print time to limit the D-Max. Normal, or am I missing something?
> >
> > Thanks
> >
> > --------------
> > Tom Ferguson
> > http://www.ferguson-photo-design.com
> >
>
>
>
Received on Thu Jun 3 11:04:40 2004