johnf04
Well-known
A camera I bought today came with two unexposed rolls of film - A roll of Agfa Isopan ISS, expiry Jan 1973, and a roll of Kodak Tri-X, expiry Aug 1974. Are these likely to be useable? What ISO should they be exposed at?
I've read (though I don't remember the source) that gamma radiation gradually fogs film, regardless of how it is stored. This is especially true of faster film. Freezing does significantly extend the life of film, especially slower film, but ultimately the limiting factor appears to be this radiation.
Perhaps a more knowledgeable member could confirm or dismiss this.
- Murray
Number 52 (1974 expired film) by Hugh B, on Flickr
Arounf the fence (1974 expired film) by Hugh B, on Flickr
Pylon (1974 expired film) by Hugh B, on Flickr