From: Katharine Thayer (kthayer@pacifier.com)
Date: 02/03/03-05:12:54 AM Z
Gordon J. Holtslander wrote:
>
>
>
> I could do this with gum, but it would involve a _lot_ of masking.
>
This is true, if you wanted there to be nothing at all, not even a very
faint almost invisible image, in the areas where you didn't want color.
But at the risk of sounding like one of those evangelizing fanatics who
won't take no for an answer, I'll add that using Jack's method of
setting the image in gum using just gum and dichromate with no pigment,
the image in the noncolor areas would only be visible at certain angles
if probably cleared, since gum itself is clear and the dichromate should
be entirely cleared out of the hardened gum.
Or you could do like Giacomelli did and just opaque out on the negative
the areas you don't want to print; in that case you'd need a separate
negative for each of the colors.
Okay, I'll leave off evangelizing about gum; go in peace and print oil
if that's what you want to do, but just wanted to make sure you
understood what you were deciding against.
By the way, most photographers' supply houses have gelatin at different
hardnesses.
Katharine Thayer
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