Laurence Payne wrote:

Eeyore wrote:

Or for tens of thousands times the price of cheaper stock. I know
you're arguing with an idiot, but keep it real:-)

The issue of archival material lifetime is a real one.

Film stock is a proven performer in this regard.

There are also plenty of stories of film, stored under less than
optimal conditions, completely falling to pieces.

Acetate base I expect.

The modern stuff uses polyester.

Graham