From: Agustin (abarrutia@velocom.com.ar)
Date: 03/31/03-12:58:13 AM Z
Now that you mention it Philip, is there a reasonable way to develop
Daguerreotypes with cold (room temperature) mercury?. I´ve tried it with the
normal process (Iodide and mercury at 60 Cº) and the developing times are
arround 1-5 minutes. What are the drawbacks when developing with room temp
mercury?. That might save me some health problems in the future!
Thanks in advance.
Agustin Barrrutia
----- Original Message -----
From: "Phillip Murphy" <pmurf@bellsouth.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, March 30, 2003 7:52 PM
Subject: Slowest development / was Re: emergency question regarding
cyanotype
> It would be curious to see a list of slowest alt-photo processes. Not
that one
> can not drag these
> processes out ( example would be many many layers in building an image).
But a
> list of process insensitivity to
> actinic light would interesting.
>
> The longest times that come to mind for myself is working the
Physautotype, the
> Becquerel developed
> Daguerreotype, and the cold-mercury developed Daguerreotype. The range is
from
> four to thirty-six hours.
>
> Anyone else practicing patience out there? Perhaps the pinhole
practitioners
> have some remarkable times.
> Didn't someone make an image that lasted months to create with a pinhole
camera?
>
> -Phillip
>
>
>
> "Christina Z. Anderson" wrote:
>
> The second part of your question: timewise, if it is gray and rainy
> outside, expect a very long exposure with traditional cyano. Someone will
> correct me if I am wrong, but if I remember, it is the longest time of the
> alt processes, and even moreso if you are using traditional cyano mixed
1:1
>
> >
>
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