I use to play a lot with zbrush, the sculpting way.
As I work in video games, I've found a very interesting way to use the bump mat.
It offer a very good preview of normalmaps rendering. Indeed I have 2 questions :

1) is it possible to work on a low res model, with the bumpviewer, but with smotthed faces(even if the smooth is shaded simulated) but not subdivided.


2)is it possible to draw in 16 bits greyscale?