I too have experienced the drastic differences humidity makes in
Pt/Pd...I've only done PO. But now I'm curious if the humidity will
have similar reactions with cyanotype and VDBrown? My studio is a bit
colder and damper these days and I'm having people coming to print here
in January and February. I don't like using the heat unless I'm in the
room...
Garimo
>
>Humidity of the paper as it is stored and at the time of coating, as
>well as of the coated sheet at printing, are huge factors in Pt/Pd
>printing either develop-out or print-out. Also, it depends on the paper:
>some want drier and some want moister. I'm running a whole set of tests
>of this right now because the winter heating season has drastically
>changed my darkroom's humidity. I'll post some notes as the answers are
>found. For a start, humidity around 50% will be much better than lower,
>and as high as 70% can be desirable for some papers, notatbly Platine.
>
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