[alt-photo] Re: cyanotype

[Loris Medici]

Christina that's my standard practice with cyanotype. I always expose
hot air force dried paper (after paper absorbed the sensitizer
completely that is - usually takes not more than 4-5 minutes...) for
sake of consistency. That way my exposure times and contrast remain
constant in all seasons / environmental conditions...

Humidity increases sensitivity a lot and maybe that is causing the
chemical fogging (my interpretation) which doesn't kick in when you're
under a specific sensitivity threshold (with thoroughly force dried
paper)... ???

Regards,
Loris.


2010/6/2 Christina Anderson <zphoto at montana.net>:
> ...
> We've taken to blow drying the paper with blow dryers til "snappy" to alleviate it.
> ...