The Panasonic NDI cameras aren't actually that good, in the world of NDI - they're only NDI|HX, which is H.264 compressed and higher latency compared to full fat NDI, which is higher bandwidth but lower latency. If one already has PTZ cameras then the BirdDog Flex converters pass the embedded NDI PTZ control back to the cameras, effectivly turning a non-NDI PTZ head into a full-fat NDI head for $399. BirdDog also make full NDI PTZ cameras (well, Bolin are the OEM, and BirdDog add the NDI magic) for less thatn the equivalent Panasonic. Not trying to sell them, just a satisfied user!