[Alt-photo] Re: B&W toning of cyanotypes

[Loris Medici]

Matti that's interesting, probably due gallic acid in the coffee. You
may also try boiled sumac, it does contain significant amnt. of these
compounds...

Regards,
Loris.


On 19 May 2013, at 04:22, Matti Koskinen <mjkoskin at gmail.com> wrote:

> hi,
>
> I wrote (and practised WebSite Painter) of my finding of toning cyanos to semi-B&W.
>
> the link www.mattikoskinenphoto.com/cyano
>
> hope someone tries it and tells what kind of  results she/he gets.
>
> -matti
>
>
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