I would suggest you should send a roll of something and send off to a lab, does not need to be a lab you can walk into, just any decent mail order lab. That will tell you if you can take well exposed photos with the Hexar AF.

Some people say that a good scan *is* quite flat, too contrasty and you can lose the highlights or the shadows, flat scans means you likely have kept both. I would drop one of your flat scans into a paint program. I'll assume you use Windows, so get something like Paint.NET and adjust the "curves", drag the bottom of the diagonal line down, and the top of the diagonal line up to make a wave, this *should* make a contrast rendition similar to what we expect from film.

Flat scans may well mean you're doing it right!