Huss
Member
This random Ilfocolor thread takes me to a recent conversation about expired film. There's a shop in Budapest specialising in camera repair and expired films from way back. Therefore, the guy is a pro developing all sorts of old emulsions, like this Ilfocolor 100, which, of course is Ferrania. He told me the following:
Ilfocolor 100 after all these years is still decent shot at 100.
Fuji is way worse, but an expired Superia 400 at 50 will be okay.
Kodak is a no-no. Kodak is so bad when expired, it doesn't even deserve a cheap C41 process.
Of course, that's his experience, probably fortified by a bad roll. Many people shoot expired Kodak negatives without much trouble. However, this shop stocks films that are 20+ years past due date, so I guess the takeaway is that ancient Ferrania and Agfa emulsions are more stable than Fuji, and much more stable than Kodak stocks.
I can also add that I recently shot both very old Kodak UC100 with a compact and flash during a party, and 160VC in 120 format with my Bronica. Both were fine.
Both your and my experiences contradict the shop's.

In my experience heat kills film. Age takes a much much much longer time. Of course you never know how a film has been stored unless you were the one that bought it at the beginning. But if it was subject to excessive heat, no manner of exposure compensation will save it.