The YN-568EXII is my first flash system I've bought because of some recommendations from the web about 4 weeks ago. The price is quite lucrative for beginners. Even if you consider that you can get more simple and yet günstigerere system flashes of Yongnuo. I signed up for this determination because it provides for me the most options. On the one hand for easy TTL flashes, on the other, away from the camera. The group function is for me currently a nice feature that I can not yet do. But the S1 / S2 modes that respond to the built-in flash my EOS550D, work well in rooms. Also in conjunction with the RF603CII radio triggers of Yongnuo the flash (without TTL) works well. The only two (smaller) drawbacks that I could find so far: 1. The attachment to the hot shoe of the camera is carried out via a screw. If this is a little too tight, he läst difficult / cumbersome solve again. This is among other things due to the fact that I can combine the locking screw hardly / poorly with my fingers to exert appropriate force. 2. The measurement grid is hard to come by with my camera measurement fields to cover. Without having some readjustment, the measuring grid is usually too high up (with the upper edge of the grid already outside the Bildausschittes) and moved either left or right.
