Filmshooting

Nizos have two teeny-tiny springs mounted behind the film gate to tension the film guide. If these get loose while you're removing the gate, you'll need a team of elves with magnifying glasses to find them. A (really) tiny dab of glue will hold them in place and allow them to function when ...

Does anyone have some information about reciprocity failure with kodachrome 40?
The only information I've found is for 135 kodachrome still-photography film and for that shutter times longer than 1 second aren't recommended.
I'd like to try some night time-exposures with Nizo s480 (manual time ...