What film?
Photographic color reversal film, i.e. the one which is used for slides (symbol E-6), for the most popular 35mm analog cameras.
My favourites are:
- Fuji Velvia 100,
- Fuji Velvia 50 (but I don’t need too much of this one, as it’s only suitable for very colorful scenes),
- Fuji Sensia 100,
but any other are good, too!