about moving camera without rotating the vtkVolume

Hello,
I would like to know if it is possible to move the camera without rotating the actor? I used and it doesn’t work correctly?
Also, I would like to range the position of vtkVolume. I fixed the position but when want to rotate my renderer the volume changes the initial position.
You can see below my results : Capture16
Capture17
Thank you for your help.
Best,