I tried shooting some 16mm Kodachrome II film (ASA/ISO 25) that expired in 1973. At first no images came out, eventually after trying all day, I was able to get good visible images on the film after exposing these frames to bright light sources, at f/2.2 (my highest lens opening) the pictures shown below.
Each frame was exposed for 2 1/2 minutes.
This being movie film, would be completely useless in motion scenarios. I have a lot of these rolls lying around and really don't want them going to waste. What do I do with them? Is there some way I can use them?