Hello, I would like to know why the Medical4 example is so dark in vtk 5.6. In vtk 5.4 looks fine, but using 5.6 version is very strange. The parameters are the same. Dora -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20110615/1d7b010a/attachment.htm>