Just how much latitude is there, if any, in the manufacturer's film box expiry date? I know it depends on how it has been stored. I have refused many in date films taken from dealers top shelves next to light fittings and in more than one instance, a couple of feet away from a switched on heater. Once purchased, all my film stock is stored cold (domestic 'fridge) until an hour or so before needed. I would never consider using date expired film on a fee paying assignment. You've guessed, haven't you? Yes, I have found the film stock I KNEW I had and not used and yes, Mrs. S. had moved it to the back to get something else in. Result? Box of film, 10x120RVP and 5x RVP plus the odd roll or two Ektachrome's - TWO years out of date. I could understand if it was a big 'fridge but it isn't, but it WAS buried. I am testing a roll at present, just interested to know other's experiences.
Regards - Allan S.