Re: Calotype neg formulas

Loren C. Pigniolo (lorenp@netcom.com)
Fri, 25 Mar 1994 18:13:57 -0800 (PST)

Thank you, Philip, for the *very* interesting references on calotypy. I
will hop on over to San Francisco State University and look them up. The
mention of British sources, reminds me that I might write Ian and Angela
Moor at the Centre for Photographic Conservation in the UK. They are
fine photographic conservators and teach historical processes as well.
Perhaps they could provide some information and further leads.

For anyone interested, The Centre for Photographic Conservation is
presenting a course entitled _Rediscovering Historic Photographic
Processes_ this August 8th - 12th, 1994. The fee for the 5-day course is
360 pounds sterling plus V.A.T. (whatever that is). More information can
be had from:
The Centre for Photographic Conservation, 233 Stansted Road, Forest Hill,
London SE23 1HU, United Kingdom. Telephone 081-690-3678; Fax 081-314-1940.

They do mention the course will cover photogenic drawings, calotype,
salted paper prints, albumen prints and wet collodion negative and positive.

Keep those calotype references coming. I am also working on my
daguerreotype set-up. I have my fuming boxes, have ordered the plates,
and will pick up my plateholders tomorrow from the post office. I am in
the process of designing my mercury box and fumehood (not an easy task).
I will probably try the non-toxic Becquerel process first.

Yours,

Loren C. Pigniolo | voice/fax: 415/665-1827
Photographic Preservation Specialist | voice: 800/484-9808 x7841
Photographic Preservation Services | i/net: lorenp@netcom.com
1044 Judah Street #1 San Francisco, CA 94122-2052 | Please call before faxing

Documents on photographic preservation and a list of our services are
available via anonymous ftp to netcom.com in the directory pub/PPS-info

On Sat, 26 Mar 1994, Philip Jackson wrote:

> I don't want to pre-empt Loren's literature search but I had a quick look
> for formulas for producing calotype negatives, and found a few references
> you might find useful: two accounts of contemporary photographers
> experience in the Photographic Journal, vol. 121 (Dec. 1981), pp. 560-4
> and vol. 129 (April 1989), pp. 196ff by Richard Morris and Darren Green
> respectively. These two articles are a bit light on technical detail, but
> state the process is quite difficult (hence the problems?) and paper
> quality is very important. Richard Morris has conducted calotype
> workshops, appropriately enough, at Lacock Abbey, and has done extensive
> research on John Dillywn Llewelyn, whose wife was Talbot's first cousin.
> I have a copy of Morris' 1980 Welsh Arts Council catalogue on Llewelyn,
> which has a technical appendix. Unfortunately, however, Blackwell's (the
> English booksellers) sent me the Welsh edition, which at the time I
> thought was a great joke, but makes life a little frustrating when it
> comes to deciphering the "Fformiwla Caloteip". I can recognise some
> chemical names: "nitrad arian" and "ddwr distyll" are silver nitrate and
> distilled water, but could somebody please look up the English edition:
>
> Morris, Richard. John Dillwyn Llewelyn, 1810-1882: The First Photographer
> in Wales. Cardiff: Welsh Arts Council, 1980. Make sure you get the
> English ed. ISBN 0-905171-60-8, not the Welsh ISBN 0-9505171-61-6 !
>
> According to Grace Seiberling, many amateurs had trouble with the
> technical treatises and followed Dr. Hugh W. Diamond's "plain, simple,
> rules" published in Notes and Queries in 1852 and 1853: "Photography
> Applied to Archaeology and Practised in the Open Air" vol. 6 (18 Sept.
> 1852), p. 276ff and succeeding issues and "On the Simplicity of the
> Calotype Process" vol. 8 (17 Dec. 1853), p. 597ff.
>
> I also found a reference to a recent thesis with a practical orientation:
>
> Margaret Klein Garri. Calotype Photography: A Process-Product Continuum.
> Columbia University Teacher's College, 1984. UMI AAC8505363. The abstract
> is reprinted in History of Photography vol. 15 (Winter 1991), pp. 324-5.
>
> Hope this helps. Let us know how you get on.
>
> Philip Jackson
> pjackson@nla.gov.au
>
>