Re: Gum dichromate issue

Thanks Richard, thanks Etienne.
Extremely helpful and well explain by Etienne, congratulations.
Let me put it in this way, yes, far distant cousins and DT is a grown up, GD
is trying to resurrect.
:-)
My issue is that there is not too much written about full color gum
dichromate (Scopick and Livick) and I am trying to read and learn from
similar or as similar processes.
Are you with me?
DT has something in common which is the requirement of three grayscale
negatives and handling them.
I do have several questions and probably too many but the first is:
Is there any book you recommend me to read that deals with the three
negatives instead of the Kodak single color negative?
Thanks,
Giovanni

----- Original Message -----
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To: <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, August 08, 2004 12:14 AM
Subject: Re: Gum dichromate issue

>
> ----- Original Message -----
> Wrom: ZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMN
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Saturday, August 07, 2004 8:11 PM
> Subject: Re: Gum dichromate issue
>
>
> > Giovanni wrote:
> >
> > > Has anybody used dye transfer technique in a darkroom?
> >
> > I have.
> >
> > > Can I say that this process is a cousin of gum
> dichromate print?
> >
> > It depends on how distant a cousin you mean. I'd call them
> third cousins at
> > best. Dye transfer is based on the hardening of gelatin
> by certain organic
> > developing agents. You expose matrix film through its
> base so that the
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> ^^^^^^^^^^^^^^^^^
> > most-exposed layers are against the base rather than at
> the emulsion
> > surface.
> > etienne
> >
>
> Another reason for this is so that the transferred image
> faces the right way. Otherwise it would be reversed right to
> left.
> Kodak also made panchromatic matrix film so that the
> separations could be done directly using filters. This is
> advantageous when printing from color negatives where it
> saves a generation in making separation negatives.
> It is a frustration that Kodak has discontinued the
> materials for DT.
> BTW, the original Technicolor printing process was a
> variation of dye transfer. They have tried to resurect this
> recently.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@ix.netcom.com
>
>
>
>
>
Received on Mon Aug 9 12:18:21 2004