For my Alpha, I bough the HVL-F42AM which has a wireless mode. On the alpha cameras, the flash can be triggered externally using the in-built flash. The nex-6 has a 'wireless' flash mode, which only works ... wait for it ... if you have an external flash installed. So I need an external flash to trigger my external flash. Thanks Sony. Does anyone know if there is some physical reason the nex-6 in-built flash cannot be used as a wireless trigger, or if they were just to lazy (or greedy) to program it into firmware? Perhaps it will be available in later firmware version, or perhaps you can BUY this function soon in Sony's app store.