[vtkusers] vtkWindowToImageFilter SetMagnification affect the RenderWindow

[Alessandro]

Hello,

I tried to implement a screenshot functionality using the example at http://www.vtk.org/Wiki/VTK/Examples/Cxx/Utilities/Screenshot.

My only issue is that the render window is affected by the setmagnification method of the vtkWindowToImageFilter, so it "zoom" after the invocation of update method. Why? Is there a way to avoid that behavior?

Thanks,
Ale