Humidity and Sensitivity... Platinium and so on...

(Did I just send that after only changing the subject
line? If so... Sorry!)

I have often noticed comments relating humidity (RH) and
sensitivity of alternative processes discussed here on the
list. Not having much experience, or need in this area, (I
am working on silver halide emulsions) I never gave it
much thought. Things have changed. I am sure if I looked
long enough I could find it somewhere, but to save time
could someone tell me at what point in time (that is in
the birth of a print) is humidity an issue?

I am not specifying a process since I assume it will be
very similar. If not, please explain.

Is it at the moment of exposure?
or is the Drying Pattern History?
or during the Final Processing?

It may well be that someone will say yes to all three, in
which case I would ask, in that case...

Are the effects reversible? Can the effects of RH at one
stage be compensated for by its effect at another?

Thanks for your patience,

Ray

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Received on Thu Aug 5 07:08:54 2004