on 22/06/2006 18:25, David Bell at david.w.bell@xxxxxxxxxxxx, wrote:
> Could I ask someone to quickly run through the merits and de-merits of
> fridge/freezer storage of film and whether it positively extends shelf life
> or simply maintains the emulsion at a particular state. (or point me to a
> relevant dissertation) Local factors of ambient temp and humidity are
> presumably a factor. Below which temperature is the benefit negligible?
on 22/06/2006 20:47, Mostly at mostly5@xxxxxxxxx, wrote:
> I personally have always refrigerated, never frozen. I seem to recall a
> specific film effect one could get from freezing film (made the emulsion
> crack like dried mud) and the freezer has always frightened me. :)
Sometime ago I asked about the risks of freezing film at -20 Celsius, since
I felt as frightened as you are.
So here I go, as if I really knew what to say:
I have several Provia100F and Velvia50 in my freezer (which is not a dry
freezer but a humid cold one) packed into a plastic case which closes
snuggly enough. From three year's time, I didn't get a cracked emulsion like
the one you describe. I've got some other emulsion defects like dark spots
or more often, lighter spots(*). These are nothing compared to how often do
I get scratched positives from the lab.
Of course, I leave the film inside its canister 24 hs. at least during
summertime before loading, hoping to keep condensation to a minimum.
Advice welcomed; as we all know YMMV
Fernando.
(*) Think this could be what Winsor says:
on 22/06/2006 18:52, Winsor Crosby at wincros@xxxxxxxxxxx, wrote:
> , although some have said that freezing the moisture in
> the emulsion can sometimes damage it.
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