diff --git a/include/osgGA/TrackballManipulator b/include/osgGA/TrackballManipulator
index 024c18da5..32202e273 100644
--- a/include/osgGA/TrackballManipulator
+++ b/include/osgGA/TrackballManipulator
@@ -108,6 +108,12 @@ class OSGGA_EXPORT TrackballManipulator : public MatrixManipulator
 
         /** Get the size of the trackball. */
         float getTrackballSize() const { return _trackballSize; }
+
+        /** Set the 'allow throw' flag. Releasing the mouse button while moving the camera results in a throw. */
+        void setAllowThrow(bool allowThrow) { _allowThrow = allowThrow; }
+
+        /** Returns true if the camera can be thrown, false otherwise. This defaults to true. */
+        bool getAllowThrow() const { return _allowThrow; }
     protected:
 
         virtual ~TrackballManipulator();
@@ -140,6 +146,7 @@ class OSGGA_EXPORT TrackballManipulator : public MatrixManipulator
         double _modelScale;
         double _minimumZoomScale;
 
+        bool _allowThrow;
         bool _thrown;
         
         osg::Vec3d   _center;
diff --git a/src/osgGA/TrackballManipulator.cpp b/src/osgGA/TrackballManipulator.cpp
index d5532bb9b..8ca46ad00 100644
--- a/src/osgGA/TrackballManipulator.cpp
+++ b/src/osgGA/TrackballManipulator.cpp
@@ -10,6 +10,7 @@ TrackballManipulator::TrackballManipulator()
 {
     _modelScale = 0.01f;
     _minimumZoomScale = 0.05f;
+    _allowThrow = true;
     _thrown = false;
 
     _distance = 1.0f;
@@ -80,7 +81,7 @@ bool TrackballManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& us
     switch(ea.getEventType())
     {
         case(GUIEventAdapter::FRAME):
-            if (_thrown)
+            if (_thrown && _allowThrow)
             {
                 if (calcMovement()) us.requestRedraw();
             }
@@ -117,7 +118,7 @@ bool TrackballManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& us
                     {
                         us.requestRedraw();
                         us.requestContinuousUpdate(true);
-                        _thrown = true;
+                        _thrown = _allowThrow;
                     }
                 }
                 else