As a remote control, the device is working properly. For the flash firing in automatic mode, the camera goes also. But if you want to use the E-TTL camera control, does it not, because the E-TTL data is not transferred. Also, the flash is no longer recognized by the intermediate Plug the receiver to the camera of this as an external flash, so can not be controlled. 2. The receiver thus you need not necessarily. I thought that I can save my E-TTL cable, but I was wrong. From the lack of E-TTL capability in the Amazon award amounts not speak but at the price it was not really to be expected. I hope the "remote control" lasts longer than that of Phottix.