U of S | Mailing List Archive | alt-photo-process-l | Jean Paul Soudre

Jean Paul Soudre


I probably wrote this in 1999, but the thread sent me back to the "plaquette" (or small book) which happens to be one of the few I knew exactly where to find... Apparently printed for an exhibition in 1969, (not otherwise dated). bought for $7.50 at either Photographer's Place or NY Photo Historical Society Fair (both now defunct & lamented).

Start at the front & it's "Apocalypse" by Jean Pierre Sudre, stunning images made by spreading crystals [K2 Cr2 O7 if I surmise correctly from the introduction], perhaps exposed by enlargement on a transparency as well as on 5x7 film, as Jean says...

Start at the back and it's an "Hommage a Hill & Adamson." I think instructions for the crystalline solution may be complete, but that's told with some technical French beyond me without a day's work.

If I remember correctly, the images are under copyright (probably Claudine's), but if no one has it I can copy the text page & send by (snail) mail to francophone "expert." (Jean????)

PS. Inspired by these images (all in b & w), my own inclination would not be to lith print them, but to follow the original approach, at first anyway, but they are stunning, tho I guess I said that.

Judy


On Sat, 9 Dec 2006, Dean Kansky wrote:

Sorry for the typo

Sudre crystallization.

Here is what someone wrote me in 1999 and it is in the
archives:


Hello,
I have been student with the late Jean Pierre Sudre
and his wife Claudine (1of the best specialists in
Europe for 19th century processes) in the mid 80's.
I don't know if what you call crystalline images refer
to what Jean Pierre called his Cristallisations : very
large format colour-toned abstract photographs
obtained by enlarging 5x7 film on which JP had smashed
heated crystals of various photographic chemicals.
As far as I remember his first cristallisations had
been realized using Potassium Bromide; he also used
sodium sulfite and experimented a lot...
I have a text he wrote about this work. When I get
some time in the next days, I'll look at what he said
and I'll post you the details !
Hope it helps you
Jean [Daubas]

Dean writes:

I used Lith chemicals and heated nothing. I think I
coated with fixer (by brush) and let it set (over
night). When it dried, I had crystals on lith.

Although I am not sure now, except it was some combo
of lith development chemicals. Or standard B&W
development chemicals or some combo of both lith and
B&W chemicals. I was playing around.  If you go for
it, or know the proper way, let me know.

I am not a pro and was playing around while a Bridal
shower was being held at my apt for someone elses
bride. I wanted to stay away from that.

I found this e-mail on the web, but from 2002

claudine.sudre@wanadoo.fr <claudine.sudre@wanadoo.fr>

However it is on the site of a photographer who took
his workshops, I think, and she may give the right
info

http://opalenik.com/index.html

--- "Christina Z. Anderson" <zphoto@montana.net>
wrote:


Thank, Loris and Alberto, Ryuji,
This makes more sense, because I got my decimal
place wrong.  It is 37.5g
paraformaldehyde in a LITER, so that is only 3.75%
solution, not 37.5% as I
thought off the top of my head yesterday, so using
close to 100ml is
logical.  DOH. I should NEVER post to the list in a
rush.

Ryuji, I revisited that post of yours and it looks
like a good formula in
that the ingredients shouldn't be hard to find.  I
assume trisodium
phosphate is the same as that at a hardware store or
do you think it needs
to be photo grade?  The hot is problematic in our
student darkroom, though,
as is the short life.

The Fotospeed, btw, was working in 5-15 minutes with
my class so speed is
not a problem.  But I am intrigued to see the image
tones you might get out
of your lith developer as compared to Fotospeed.  My
guess is image tone is
paper dependent, and would you agree?

I did buy Tim Rudman's lith book and it is gorgeous
but have only had time
to look at pictures. But, last week of classes and
only one more critique to
go.

Dean Kansky, what is the SUNDRE formula and what are
Sundre
crystallizations?
Chris
----- Original Message -----
From: "Alberto Novo" <alt_list@albertonovo.it>
To: <alt-photo-process-L@usask.ca>
Sent: Friday, December 08, 2006 10:32 AM
Subject: Re: Newbie in lith print



Loris,
I don't know where you found that page...
Paraformaldehyde is a polymer of formaldehyde: the

former is (CH2O)n (CAS

n.30525-89-4), the latter is CH2O. Hence, you can

use the weight of

paraformaldehyde like it were pure (100%)

formaldehyde, but you will need

to take into account the weight/weight percentage

of the solution and its

density in order to calculete the corresponding

liquid amount.

As an example, if 37.5 g of paraformaldehyde are

required and you have a

37% (w/w) formaldehyde solution @ 1.09 kg/dm3

(this should be clearly

written in the label), you will need

37.5x100/37x1/1.09= 99 cc of

solution.
Alberto

I found a page saying "...A 10% formalin solution

should be equivalent

to a 4% paraformaldehyde (by weight)

solution...". Concentrated /

saturated formalin is 37% AFAIK, not 40%. Anyway,

I'll do the math: Since

it says 100g 4% paraformaldehyde (4g

paraformaldehyde) solution is

equivalent to 100g 10% formalin (10g

formaldehyde) then you have to use

2.5 units of formaldehyde per 1 unit of

paraformaldehyde (10 / 4 = 2.5).

Since Christina's formula calls for 37.5g

paraformaldehyde, you have to

use 37.5 x 2.5 = 93.75g formaldehyde. In 37%

solution terms this should

make 93.75 / 0.37 ~= 253ml 37% formalin, *if my

logic is correct*... I

don't know if the information I got from that

page is correct and most

importantly I'm not sure if my logic is correct.

Therefore don't rely on

this info ;) Regards,
Loris.











____________________________________________________________________________________
Any questions? Get answers on any topic at www.Answers.yahoo.com.  Try it now.