Re: cyanotype

Hi Sam,

----- Original Message -----
From: "Sam Wang" <stwang1@bellsouth.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, May 29, 2004 4:20 AM
Subject: Re: cyanotype

> Hi Gord,
>
> Just potassium ferricyanide alone may not be much good for making prints,
but ferric ammonium
> ...
> But why would one want to do it with just one ingredient?

A speculation:
Could it be to prevent "self-masking"? I understand that cyanotype is kind
of self-masking process - because it prints out with considerable amount of
density - and maybe if one expose with just Ferric Ammonium Citrate there
will be less density before Potassium Ferricyanide developing which means
less self-masking?

Regards,
Loris.
Received on Sat May 29 03:10:24 2004