From: Christopher Lovenguth (chrisml@pacbell.net)
Date: 04/03/03-09:51:22 AM Z
I use the Becquerel method and there is a longer exposure time. What I'm
finding is F5.6 in full direct above sun around 5mins. This is getting
better though since I getting better at fuming and buffing which are the
culprits of exposure issues. But in reality I don't think I'll ever get
under 3mins. As far as color, I'm able to get from very cold blue toned
plates to very warm browns depending on a number of factors but the biggest
is how long I develop in the sun.
With the fuming box, all I did was make a box out of Plexiglas and it cost
me maybe $20 for a 4"x5" version and double that for the 8"x10".
To see examples of mine you can see them here digitally:
www.chrisportfolio.com
-----Original Message-----
From: Phillip Murphy [mailto:pmurf@bellsouth.net]
Sent: Thursday, April 03, 2003 1:44 AM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: John Hurlock's cold mercury development / was Slowest
development
Agustin,
Plates developed in this manner generally have a cooler appearance.
However, depending on the coating cycle used, the amount of time in
development,
and your gilding technique, you can achieve neutral tones in the image. I
would
highly
recommend this method for starting with the process because it eliminates a
whole nest
of problems that you'll need to deal with in mercury development and allows
you
to concentrate
on the real challenge which is plate preparation and finding interesting
images
to photograph.
-Phillip
Agustin wrote:
> Yes. Phillip. Thanks for the advice.
> I just bought "Coming Into Focus", last week, and it haves a chapter on
> daguerreotypes and the bequerel process. Doesn´t this process need more
time
> when exposing the plate?. Is there any other difference, rather than the
> long developing times and the less sensibility of the plate?. Maybe some
> color change?.
> Thanks again for your help!.
>
> Sincerely,
> Agustin Barrutia.
>
> ----- Original Message -----
> From: "Phillip Murphy" <pmurf@bellsouth.net>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Wednesday, April 02, 2003 8:51 PM
> Subject: Re: John Hurlock's cold mercury development / was Slowest
> development
>
> > Hello Agustin,
> >
> > Have you considered Becquerel Development?
> > The development occurs by simply putting the plate under yellow or red
> filter
> > material and
> > exposing it to the sun or a strong lightbulb. Yes, it's really that
> simple...
> > The initial coating of the plate is with iodine only.
> >
> > best regards,
> >
> > Phillip
> >
> >
> >
> > Agustin wrote:
> >
> > > Phillip.
> > > I really apreciate all your income in John Hurlock´s cold mercury
> > > development process. I made a Google search, and found
> www.moderndags.com,
> > > his site, were he shows some of his work.
> > > The process itself sounds quite expensive. I even have problems with
the
> > > purchase of the developing and Iodide boxes.
> > > I might leave it as a possibility in the future. The economic
situation
> here
> > > is quite bad.
> > > I really thank you for your help. It sounds like a good replacement
for
> > > heated mercury (highly toxic) development.
> > >
> > > Sincerely,
> > >
> > > Agustin Barrutia.
> > >
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