I’ve see that LensFun support Panasonic FZ1000, a fixed lens camera.
Fixed lens DMC-FZ1000 2.73 yes yes no
When I open any RW2 file RT gets the camera name but not the lens and i cannot select it manually because there isn’t any “FZ1000 fixed lens” in the list.

Without a lens I cannot use lensfun corrections. Is it a bug? Do i made something wrong?