After reading through the tutorials, it seems to me that many things can be achieved through the HAL API that can also be done through the SDK. For example, opening a camera and adding a callback for events can be done using the HAL (eg HAL Viewer Sample) or by using the Metavision::Camera interface. My question is, when should I prefer the HAL interface over the Camera interface? It seems to me that the Camera interface is higher level, simplifies code quite a bit and allows you to use the staging/pipelines. So is there anything you can do with the HAL that you can't do with the Camera interface? It seems that you can even set biases, receive/set triggers etc through the Metavision::Camera.