From: Gordon J. Holtslander (holtsg@duke.usask.ca)
Date: 08/30/02-02:41:52 PM Z
Hi:
Many people use the ortho/litho film that is used in the printing
industry. Its avaiable in large sizes and is usually fairly inexpensive.
This film is a high contrast film, but it can be developed with a special
low contrast developer so that film acts as a normal continuous tone
negative.
A good developer formula specifically designed for making enlarged
negatives is Dave Soemarko's LC1 developer. See
http://members.aol.com/fotodave/Articles/LC-1.html
for details.
I use a film made by kpgraphics (Kodak's graphics arts division) call
Kodak Camera 2000 CGP film. I use it because its easy to get in Canada.
KPgraphics distributes it worldwide. Their European office would serve
Istanbul. Email info@kpgraphics.com to find a local distributor.
There are two methods of making an enlarged negative
One is by making an internegative (acutally a positive) from the oringal
negative, and then making the working enlarged negative from the
internegative.
Laim Lawless has developed a technique where othro/litho film can be
directed in a reversal process to make an enlarged negative in one step.
See http://rmp.opusis.com/documents/reversal4.pdf
and
http://unblinkingeye.com/Articles/NbyR/nbyr.html
Hope this helps :)
Gord
On Fri, 30 Aug 2002, diekin wrote:
> Hello ,
> living in Istanbul I recently got interested in alternative processes and
> would likt to start with cyanotypes.
> As I would like to have at least 1.5mx2m sizes, I was wondering how I can
> obtain such a large negative.
>
> Thank you for your help and advise,
> rgds from Istanbul,
>
> Dieter Merhart
>
---------------------------------------------------------
Gordon J. Holtslander Dept. of Biology
holtsg@duke.usask.ca 112 Science Place
http://duke.usask.ca/~holtsg University of Saskatchewan
Tel (306) 966-4433 Saskatoon, Saskatchewan
Fax (306) 966-4461 Canada S7N 5E2
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