I have recently been looking into ways of altering the toning of cyanotypes
- not MAJOR changes, but subtle changes of colour. In "The Keepers of
Light" a variety of toning methods (eg tanninc acid plus ammonia) are
mentioned. BUT.... are they permanent/archival? I know there have been
discussions about this before, but I trust you will be patient with me. I
know that it is possible to achieve a deeper, different quality of blue
(NOT just intensifying), and that one can get a rather wonderful sublte
purplish tints, but I'm not sure of the most permanent method. Any
suggestions?
What books are there specifically about Cyanotypes which I should search
out? Also, does anyone know of a UK shop where I can find the book by Dick
Stevens: Making Kallitypes: A Definite Guide, Focal Press 1993, ISBN
0-240-80181-4 which was mentioned a while ago? Do I have to wait until my
next (ineviatble) journey to "The Photographer's Place in NYC"? ;-) Are
there any other books about kallitype I should know of? Having sat back and
watched others set up strings for discussion, I await your expert and (no
doubt) diverse opinions!
Jonathan Anderson