Was purchased for Sony Alpha SLT-850 and 55 to unleashed by the camera to use the Sony HVL-F58 with TTL control. The flash is directed onto a reflector with us on tripod and so gives a much more interesting lighting. As known, the Speedlight Commander of the manufacturer does not as good as in the open and also not reliable in rooms. That's why I use either flash radio trigger or if the Kurzzeitsyncronisaton the camera with TTL metering is required, this great cable where the FP-time control also works flawlessly. Great Budget cable, delivered quickly and it works with all TTL functions of the camera and flash