I totally agree with this. Certain films scan very well, including Portra 160 and Ektar; I'm not sure about Portra 400. But I have had a lot of problems with "grain aliasing" on many other film stocks. I've all but given up on scanning negatives. My preferred route going forward is to make a contact sheet of a film to see what is worth enlarging; then print the worthwhile pics, and scan the prints if I need to share the images digitally.
Originally Posted by Rudeofus
I think it's all part of a secret plot to make people think that film is inferior to digital, when the truth is, I believe, the opposite.