[alt-photo] Re: potassium phosphate

[Vedos]

And then you could do a pigment inkjet (any color) *under* Pt... I've done that with VDB, and planning to try it with Pd soon...

cheers,
- Jalo


-- If you only look at what is, you might never attain what could be --

V E D O S
Alternative Photographic Processes
Satakunta University of Applied Sciences
vedos at samk.fi
http://vedos.samk.fi
http://www.samk.fi
________________________________________
From: alt-photo-process-list-bounces at lists.altphotolist.org [alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of etienne garbaux [photographeur at nerdshack.com]
Sent: Thursday, July 01, 2010 10:41 AM
To: The alternative photographic processes mailing list
Subject: [alt-photo] Re: potassium phosphate

David wrote:

>All I really wanted to know when I posted to the list was; has anybody
>made bluish tone platinum prints and if so how?

My remarks refer to the traditional develop-out Pt process (NOT Pd or Pt/Pd).

I have never succeeded in getting what I would describe as "bluish
tone" Pt prints.  By choice of developer one can get good dead
blacks, and sometimes even a "plum" color (which to me is a touch
warm with a cool note).  Gold toning can also produce a plum
color.  If you start with a dead-black Pt print and then tone in the
right gold toner, one might even term the result "bluish," but it's
not like a classic cold-tone silver-gelatin "bluish."

I have seen cyanotype-over-Pt prints that were definitely bluish --
probably just about what you want.  But I do not know exactly how
they were made.

I understand some of the print-out chemistries have quite a range of
possible colors.  I believe Carl Weese published some experiments in
the '90s demonstrating the range of variations possible with the
Lithium/Cesium "ziatype" process.

Finally, you can get whatever tone you want with either the carbon
process or the monochrome dye-transfer process, but of course they
would not be Pt prints.  You could do either over Pt, just as you
could do cyanotype over Pt.

Best regards,

etienne




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