I am attempting to use a follow focus ring with my pxw-z100. If I rotate the follow focus (or directly focus ring) between two fixed points the focus points change. For instance if I set points at 1.0m and 2.0m (as shown by viewfinder) and rotate back and forth a few time the viewfinder will show 1.1m and 2.1m. If I keep going the focus points get further off. It seems like rotating the ring in one direction adjust focus faster than in the other.
Anyone successfully using follow focus with a pxw-z100?