I have been a while 2 YN-622N wireless modules and wanted me to buy just for my 2 flash an expansion module, when I saw that it finally gives a control unit. and the super at a price. So ordered and delivered super fast. A test setup was made quickly because the devices found immediately. iTTL test was successful. But that's almost more important yes, the individual control of the flashes, here you have to something in the operation purely Peeve but actually everything is set up quite logical. Important to know is: Will you have to manually control the flashes in their power to sit on the YN-622 modules STILL iTTL compatible flashes. Technically clever namely the following: transmitter set to manual, flash output, transmitter transmits in iTTL mode to the YN-622 modules, these derive the iTTL flash signal to the furtherance of these disguises himself then. The YN-622 TX so manipulated the iTTL signal in manual mode, so you still need iTTL compatible flashes. After a few test and sample Shoots I'm totally thrilled. The perfect complement to the YN-622 receivers!
