[alt-photo] Re: Gum...again!

[Keith Gerling]

I'm sure there must be an explanation for what you observe, and maybe
somebody can offer it.  But I have to say that I have over-exposed on many
occasion - sometimes grossly, and i have not observed a drastic change in
color.  Subtle maybe, because of the tanning effects of the gum itself, but
mostly the end result is exactly like the pre-exposed gum+pigment.

Please, oh please Gods Of Gum!  Do not inflict upon me another ill!  I've
had so many...  But not this one.. Yet...

On Fri, May 14, 2010 at 6:33 PM, Paul Viapiano <viapiano at pacbell.net> wrote:

> Hi all...
>
> I've been printing away here since my entry to gum one year ago, exploring
> this and that and being accepting of the vagaries of the gum experience,
> going with the flow, etc...and having a lot of fun among the
> disappointments.
>
> But today, while experimenting with different papers for making unwaxed
> paper negatives (I've been using waxed negs for gum for the last few months
> or so) I ran across something which I don't think I've seen mentioned;
> either that or I am totally losing my mind. And that is how drastically
> overexposure can totally change a color or certain colors.
>
> I'm used to seeing dull colors after development, nothing like the brushed
> out color intensity of just pigment mixed with the gum, and although I've
> tested exposure many times with my wedges, I don't think it really hit me
> until today that not only will an overexposed layer take longer to develop,
> it drastically changes and dulls the original color.
>
> I think I've been overexposing all along...
> _______________________________________________
> Alt-photo-process-list | http://altphotolist.org/listinfo
>