RE: Why multiple exposure (was Re: (Gum) Tonal scale)

Hi Katherine,

The standard emulsion in my mind was pigment specific: I mean
pigment/gum/dichromate ratios different for each pigment. Thanks for the
warning anyway.

BTW, also thanks for the comments on my "strategy". I guess both
Christina and you saved me from useless struggle.

Regards,
Loris.

-----Original Message-----
From: Katharine Thayer [mailto:kthayer@pacifier.com]
Sent: 02 Aralık 2005 Cuma 23:47
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Why multiple exposure (was Re: (Gum) Tonal scale)

On Dec 1, 2005, at 11:46 AM, Loris Medici wrote:

> I have to mix a standard emulsion (same amnt. Of pigment / gum and
> dichromate) in order to calibrate with the PDN system. Everything has
> to be
> as constant as possible. I just added gum to the tube pigment until
the
> saturation and density seemed right to me (not too dark and opaque,
> not too
> light).

...
But if "standard emulsion" means that for every pigment you use, you
use the same amount of pigment, gum and dichromate, then I'd say that's
not such a good idea. So I hope it's the first and not the second. I
just need that clarification.
Received on Tue Dec 6 20:27:23 2005