Re: sheet film

Hi:

Sheet film typically must be processed in complete darkness. Many people
use sheet film that is intended for use in the printing industry to make
high contrast negatives. This film is called orthographic lith film.

The label Orthographic means the film is not sensitive to all colors of
light. It typically is not completely sensitive to red light. This allow
one to use this type of film with a red safelight.

People will process this in a dilute print developer or a specialized
low-contrast developer.

It is possible to develop regular (also called panchromatic - senstive to
all colors of light) film under a very specific kind of safelight - but
this light is very dim and the film can only be exposed to it for very
short periods of time. Its essentially the same as processing film in
complete darkness. I wouldn't recommend this as a first try for sheet
film.

I use Kodak Camera 2000 CGP film. This is a film Koday Polychrome
Graphics produces for the pre-press industry. Its commonly available, but
not usually in camera/photography stores. I buy it from a pre-press shop.
Look for a Heidelberg shop - they would carry it.

Gord

On Tue, 6 Apr 2004, Jan Kapoor wrote:

> Hi--
>
> The only ones I know of are ortho films such as Arista which is sold by
> Freestyle. Comes in various size sheets.
>
> Jan
>
> brad isaacs wrote:
>
> >hello,
> >
> >can anyone tell me what kinds of sheet film can be
> >handled under a safelight? most of what i've looked up
> >requires totaly darkness.
> >
> >thanks
> >
> >brad
> >
> >______________________________________________________________________
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> --
> Fine art photography of Jan Kapoor at www.jankapoor.net
> Pinhole, large format, alternative printing processes and digital.
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>
>
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---------------------------------------------------------
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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Received on Wed Apr 7 09:48:12 2004