RE: Litho - Halftone film question

Hi:

Safelights - I use a red safelight - the same that I use for paper.

If you can't get any LC-1 contact me offlist. I should be able to weigh
some out for you and pack it up.

As for reciprocity of ortho the ASA rating already compensates for it.
I've done exposures of up to 6 hours and they were exposed properly rating
the film at 1 (yes 1). I think the same applies for paper - though I
haven't used paper in a while.

If you use sheet film you will likely have to compensate for reciprocity.

Here's kodak recommendations for tmx 100
http://www.kodak.com/global/en/professional/support/techPubs/f4016/f4016.jhtml

indicated exposure compensation
(seconds)

1 +1/3 stop
10 +2/3 stop
100 +2 stop

Gord

On Mon, 20 May 2002, Greg Newberry wrote:

> Gord,
>
> Thanks so much for your information. It will help me out a lot. A couple of
> questions.. Safelights, same as for B&W paper? 1 ASA with LC-1? I think I'd
> better keep some TMX 8x10 sheet film on hand just in case. The Arista and
> Dektol sounds like a good starting point and then try the LC-1. Do you know
> if anyone premixes the LC-1 dry chemicals and sells them? Also, do you know
> of any reciprocity charts for the sheet film or paper at 6 ASA? I use Ilford
> RC glossy and will be experimenting with it for the negative and contact
> printing it as well.
>
> Thanks
> Greg
>
>
>
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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 Tue May 21 01:18:45 2002