Re: [APML]: Freezing Film

[apilato <apilato@spectra.net>]

The Astro-Photography Mailing List
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Brian W.,

> I know that films can be refrigerated to preserve their freshness, but how about 
>actually freezing film? Has anybody ever frozen film for a long period of time, thawed 
>it, exposed it, and then analyzed the emulsion to look for changes?

I have worked for several Photographic Film Manufacturer's and freezing
for months up to several years is a common practise in Quality Control
(for reference emulsions). The key is to let it thaw out completely
before using. Freezing stops any changes in Sensitometry.

Thanks,

Tony P.