Many years ago film photography was popular, all photographer pretty enjoyed the analog photography (films) by its exposure latitude and smooth tonality. However How to keep those films in safe and clean would be a issue. Due to the environment, water, temperature and chemical reaction are different, all professional film labs still have their own "standard" in fact even though they should be the same. Some chemical on films would not be cleaned completely and also could be affected by storing temperature and humidity, etc. After many years scanning those film, those chemical became a lot of little black dots appearing on the films, it is very tough that takes up to few hours to finish the retouching work of one frame. Therefore, after processing the films, it is better to scan them digitally or reproduce by a high quality DSLR for future storage.
The sample of the black dots on a film:
(Taken by KODAK EPR film in 1996, but other taken by Fujifilm Velvia films at the same time still look good now.)
