Locking tool for zoom & focus?

[Lenilenapi]

I know I've read here that a few companies make some kind of tool to lock the zoom and focus on the video camera. I looking for this for an EX-3. mainly just the zoom.

Thanks

Lenny Levy

 

[Huy Vu]

Zacuto makes the Z-stop

http://store.zacuto.com/Z-Stop.html