I have a camera with a specific Field of View (FOV). I need to extend the camera's faces to surround the camera view. The result might be something like a cone as shown in the lower part of the image. I understand creating a cone and editing some values might give me the same thing I will get from extending the camera faces (calling face might not be technically correct though). However, we have to change the camera FOV very often thus cone solution might not be feasible for long run. Is there any python script or solution to do that?

I have a camera with a specific Field of View (FOV). I need to convert the camera's faces into planes then extend them to surround the camera view. The result might be something like a cone as shown in the lower part of the image. Scaling the existing camera won't be useful for me as the faces/sides won't be planes. I understand creating a cone and editing some values might give me the same thing I will get from extending the camera faces (calling face might not be technically correct though). However, we have to change the camera FOV very often thus cone solution might not be feasible for the long run. Is there any python script or solution to do that?