Calculating reciprocity failure for Agfa RS100 color slide film (120)

Crazy question?

I've half a dozen 120 rolls of Agfa RS1000 color slide film that I want to try with my 6x9 pinhole camera.

I've been unable to find anything that speaks to using this film in a pinhole camera, in particular its reciprocity failure.

Would anyone have any ideas how to go about calculating the reciprocity failure for Agfa RS1000?

Thanks

joe

It might have to be a matter of experimenting.....any Agfa RS1000 is now going to be many years outdated, and I would be concerned that ageing and storage conditions for such a fast film would affect any recommended reciprocity calculations.

(I'm probably totally wrong, but I think that I read somewhere, years ago, that RS1000 was actually manufactured for Agfa by 3M, based on their Scotchchrome 1000 slide film.....in which case might the new Ferrania company still have some info. ?)

Both film are quite different.
Agfa up to now never sold a film not manufactured by them.