Well, comparing 1962 Perutz Peromnia and 1963 Ilford Selochrome was easy. Both had fog, but what a difference, and Peromnia lost almost all sensitivity while Selochrome was still 21/100.
PS Selochrome wins - but do not forget: I don't know how the films were stored all that time! As I said earlier: no science, just fun.
Good achievement!
BeantwoordenVerwijderenQuestion: did you develop this one also for half the time?
No - I trust Selochrome almost blindly! (But I did look at my flickr "old film..." set first. Selochrome never failed.)
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