Hi David If you mean to see the actor closer, use renderer.getActiveCamera().zoom() If you mean to change its scale use vtkActor.getProperty().setScale() Max -- View this message in context: http://vtk.1045678.n5.nabble.com/Zooming-Actor-tp5723339p5723356.html Sent from the VTK - Users mailing list archive at Nabble.com.