def METHOD_NAME(self):
    ds = self.ds
    tf = self.setup_transfer_function("camera")
    cam = PerspectiveCamera(
        self.c,
        self.L,
        self.W,
        self.N,
        ds=ds,
        transfer_function=tf,
        log_fields=[False],
    )
    cam.snapshot("perspective.png")
    assert_fname("perspective.png")