Quote Originally Posted by NB23 View Post
What explains, for instance, that the 2005 expired pan-f I shot recently is perfectly well developed and even has the manufactured markings bright and clear while fresh Pan-F often comes out washed out?

Under the above circumstances, the "latent image" theory just doesn't stand.
I wonder if you might have the two films confused with each other??

And in any case some images comparing the two could lend some credence to your claims.

I certainly do not consider this a QC issue, it is a slow film issue. Efke 25 behaves similarly. I have seen that if it sits around and isn't developed promptly the images are less dense. I suppose it could be my storage conditions, (cool but not frozen - I don't have those special thermostatic hands) but what I see for myself I tend to believe more.