If going hybrid, i.e., shooting film and then scanning, you will get better results if you shoot reversal instead of negatives because you don't have to invert. I found this idea in a book. Cameras that read DX codes will default to ASA 100 if loaded with a cartridge that has no DX coding. The Promaster 2500PK and the Vivitar V3800N are the same camera. Fuji has ceased production of sheet film.