Setting virtual stops on spectrum ST4 for focus Fz allows you to set limits on how far you can rotate your lens during live moves. This can come in handy if you want to avoid overrunning physical stops on a lens, if you want to set distance limits on lenses with soft stops, or if you just want to play within a focus range. Watch this video to learn how easy it is to set these up.

The eMotimo spectrum st4 is a 4-axis motion controller with pan and tilt built in. It integrates and drives 2 additional powered axis like slide and focus. It is controlled by either the included wireless gaming remote, or the navigation joystick on the side of the unit.
More info: emotimo.com/spectrum
Store: store.emotimo.com/spectrum-st4-p110.aspx