I use the lightning away from the camera with the flash controller YN560-TX on the Sony Alpha 7R, which works fine Thanks to compatible hot shoe of Sony Alpha 7R without adapter. The flashes can be via the control unit on distances of 50 meters (probably longer distances possible) even under adverse conditions control and trigger (in caves, without line of sight between the controller and flash, with 100% humidity, relatively cool (12 degrees Celsius). That me a bolt from the height of 2 meters has fallen on the rocky ground, he gave me respect. of the flash is not resented, although a portion of the housing is canceled.
