Freezer storage of unexposed color sheet film?

[timothy_blomquist1]

<p>I have the opportunity to buy a large amount of 8x10 color transparency sheet film. I won't be able to use a lot of it for a while and I am curious about freezing this film for long term storage. Can I expect any color shift issues because of the freezing? I would thaw slowly for a week or so before using any of it.</p>

[bgelfand]

<p>Hopefully your "large amount" comes in multiple packages of smaller amounts. You do not have to thaw for a week; several hours should suffice. I usually take my film - 35mm or 120 - out of the freezer the night before I use it and let it sit on the kitchen counter. That should work for sheet film, too. Let it come up to room temperature before you put it in the film holders.</p>

[eugen_mezei]

<p>I freeze type 135 and rollfilm in their original packing. 135 has airtihgt plastic containers and the rollfilm comes in airtight foil. So I fear no damage from humidity.<br />Is sheetfilm also protected agains humidity or does it just sit in the 3 paper boxes?</p>

[timothy_blomquist1]

<p>Sheet film is also contained in a thick foil wrapper. I am not too worried about moisture, but some kind of color shift caused by the actual freezing of the film.</p>

[James G. Dainis]

Film doesn't freeze; no change of state takes place. It is just stored at a low temperature.

[mike_earussi1]

<p>The colder the temperature the slower the deterioration. I've used slide film decades old that's been frozen at 0 F and it's been fine. The key is its iso, the lower the iso the less deterioration occurs. Iso 50-100 freezes best. At 0 degrees all chemical processes stop (for all practical purposes), it's just cosmic rays that cause fogging, which affects high iso film more readily.</p>