working for some time with the Yongnuo YN-622 radio / Slave unit to flash unleashed. Have always a remote trigger / receiver used as a transmitter on the camera what funktionniert well. It made me very annoyed, however, just having to make all the settings from the camera menu or on the flash itself, which brings a lot of time and legwork with them. Use a flash Canon 580 EX 2 and older versions (540 EX and 540 EZ) in manual mode. Now I've bought the 622C-TX and am thrilled. High-quality workmanship, easy operation and a great overview of the settings - assuming he harmonizes with all flash units.
By 580 EX 2 allows you to customize everything on the radio triggers that older flashes not take over the aperture setting, but unfortunately the mode. Here I must unfortunately still running or preset again. So I'm going to buy, to get into the comfort of this otherwise great device for "little" money the matching Yongnuos. The operation is really simple and can be operated intuitively learn - otherwise there is also on youtube a good and understandable video [...]