I use a vtkInteractorStyleTrackballActor. How can I set the focal point of the camera to the center of the rendering window ? Thanks Zohar -- View this message in context: http://vtk.1045678.n5.nabble.com/Set-focal-point-at-center-of-renderer-window-tp5721588.html Sent from the VTK - Users mailing list archive at Nabble.com.