There was a communication problem with the function of lightning with my camera. This was geklährt by the manufacturer, so I would recommend this product to a restriction. In the indication "Manual Flash" must be taken. A wireless slave flash without parallem camera flash is not possible with the Sony SLT-A35. This is probably (if at all) only with expensive automatic Plitzgeräten. Other camera's ?? It is only via cable or on the camera's hot shoe. Wireless flash with only the slave flash is only possible by covering or redirecting the camera flash. The price performance ratio is optimal. I highly recommend this device. To mention is the excellent feed stream from the manufacturer. Promt, friendly, competent and understandable. MFg P. Schmidt