I believe you are asking if you can more precisely manually control the focus on the EX-1. If that is your question, the the answer as an owner of both HVX and EX-1 is the manual focus is a much more serious/pro system on the EX-1. You can even have real calibrated marks.
If you put your hands on a EX-1 camera just grip the focus ring and pull toward the body and the click will put you in manual focus with trues close and infinity stops. In the forward position the ring reverts back to a non-calibrated configuration. I still have issues with the Avid workflow not being worked out but the camera I still like.
Good luck.
Marion Laney
Director-DP-sometimes Editor
ideaWercs, inc.
Atlanta, Ga. USA
Producing in HD&35mm&SD
Food Network series “Good Eats” and others.