Re: Print Flashing

Hello,

Without the pronounced toe and shoulder like that of silver gelatin papers,
I'm guessing the carbon will not give the same responce to flashing as with
silver gelatin. My only attempt at flashing with carbon was a disaster, but
not due to the flashing.

If I had more time (and patience), it would be fun to do a little test with
carbon tissue to see what its exposure threshold is. I wonder if the high
energy of the UV light coupled with the dichromate might be more efficient
than the visible light/silver halides combination -- which if true, might
account for the straighter "curve" of the carbon tissue and could make it
difficult to use flashing. I wish I knew what I was talking about!

As I understand it, flashing pushes (exposues) the silver gelatin paper
along the toe of its responce curve to the point where curve begins to rise
(where the paper will start to show some tone) -- so that any small amount
of light passing thru the highlight area of the neg can then cause an
increase in density in the paper.

So I think that since carbon tissue has no (or very little) toe, any
flashing will just fog the tissue.

Your results may differ......

Vaughn

----- Original Message -----
From: "Eric Scott" <eric.scott@mac.com>
Subject: [carbon] Print Flashing

> Hello -
>
> When I was printing silver, I made use of print flashing. I did this by
placing a piece of white diffusing material underneath the enlarger lens,
then flashing prior to the basic exposure. This brought in subtle
highlights that were diffcult to bring in otherwise. Can I do this with a
UV light source? I'd lay the diffusing material on top of the contact frame
glass. I'm not sure that the white diffusing material won't block the UV.
I can try, but I'm hoping I won't need to spend hours trying to find the
flash time, only to learn that it won't work.
>
> Eric.
_______________________________________________
Post to the list as PLAIN TEXT only - no HTML
carbon mailing list
carbon@spitbite.org
FAQ at http://spitbite.org/carbon/list.html
Received on Tue Dec 27 03:31:29 2005