Re: Gum Pigments

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From: Christina Z. Anderson (zphoto@montana.net)
Date: 08/05/03-08:11:06 AM Z


> On Sat, 2 Aug 2003, Christina Z. Anderson wrote:
>
> > ... In fact, I have had to back off
> > that amount for many colors, not because of pigment stain, but because
the
> > color is too brilliant to use at that proportion. That said, I also
think
> > the stain test a la Anderson etc. has validity and I will do it when I
get
> > down to SC and start working with this variable--if Sam will let me test
and
> > not make art :).
>
<Judy wrote> Chris, you're doing the White Duchess act -- saying two
contradictory
> things at the same time -- unless you're saying Anderson is right except
> when he's wrong...

Just because I might find that staining is not a problem with my practice
does in no way negate the validity of the Anderson stain test. I cannot
negate the validity of the stain test until I test it. Hope that is clear
and direct--unstained?
>
> > If I remember, Ware said that the hardening of the gum kept the pigment
> > successfully suspended above the paper, which hardening was less in the
> > highest highlights, of course, and as you found (which I did, too, as I
> > mentioned in my posts on lemon juice and gum) that some of your tests
> > exhibited the highest highlights with more pigment stain, said stain
> > decreasing toward the midtones, and then so on, to illustrate this
point.
> > I happened to find this result in my step tests only when using lemon
juice,
> > or acid, so I wonder if the acidity of your gum was a factor when you
found
> > this result happen occasionally. Certainly I have no quibble with
Ware's
> > supposing the hardening had an effect on stain.
>
> Chris, I think you're garbling again.
>
First White Duchessing, now garbling. Judy, I fully understand the test; as
I have said, I have examples of it myself.
Chris


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