Perspective view nodes

Has anyone had much luck with the ByEyePointandTarget nodes? I have found several discussions about it and everyone seems to have kind of the same issue with it. What I have is a series of camera device families that I need to create views for. I know the camera eye location and FOV that the camera is supposed to have. When I generate the view and do not isolate my target I get a mix of results. I can get decent results by having the user pick a target and using the isolate option in the node but with over 250 cameras in the model that can be a rather time consuming task. I am looking for ideas on how to approach this not necessarily how to do it. More some help in moving the correct direction.