From: Joachim Oppenheimer (joachim@microdsi.net)
Date: 04/06/03-03:06:19 PM Z
Could you explain why flashing is important, and to what degree is the
preexposure carried? Thanks Joachim
-----Original Message-----
From: Phillip Murphy [mailto:pmurf@bellsouth.net]
Sent: Sunday, April 06, 2003 1:54 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Thomas Duplex Sodium Vapor Safelight
Something to keep in mind when doing a coin test for "safe" lights, be
sure that you "flash" the paper or film first to the
inertia point of the material before beginning the coin test. Leaving
this step out is a common mistake.
-Phillip
Gumprint@aol.com wrote:
In a message dated 4/5/2003 9:00:17 PM Pacific Daylight Time,
jefulton1@attbi.com writes:
>Dear Group,
>Is anyone using the Thomas Duplex safelight for Alternative
processes?
>I have a small darkroom, 7.5x11 feet, and I've gotten mixed
information
>about whether it is safe to use in this size room.
>I would like to put mine to use.
>Any comments.
>Thanks in advance,
>Don Bryant
I use a Thomas Duplex in a dedicated alt photo darkroom that is 8X10.
With the doors open on the second notch using the red filters I have had no
difficulty with Van Dyke, Gums or Cyanotype during processing. However, I do
not dry the emulsions in that room. I put the papers in a completely dark
room (or turn out the lights completely).
One more thing, my room is painted semi gloss white so there is a lot
of light being reflected (no spams here, I just take pitchers) but I still
have no trouble.
I do agree about the coin test for ANY process in any darkroom. One
simple test in the beginning of any new emulsion will save a lot of hours
and head scratching.
Carole
This archive was generated by hypermail 2.1.5 : 05/01/03-11:59:54 AM Z CST