I needed a third lightning for home studio. If mainly the background brighten. Because this flash waved TTL for Nikon, I was weak. Could one but with such a guide number so sometimes replace a SB 600 ... That was nothing. The flash makes at first sight a solid impression. The lighting of the areas, especially in the zoomed in only 85 mm mode was evil dark. I had the impression that the flash some important camera information such as ISO values remain so hidden. The did not notice what's going on. The change in the slave mode succeeded after trying out at some point. But then sometimes not suddenly more. Had the device completely off-switch, then the exchange went again. Something was wrong with the Elktronik the control knobs. that must not be. One reviewer missed an instruction manual. Yes me too. If one does not get further times with trying out (the part is not self-explanatory), you can see quite old from the attached leaflet. The described with insolence only very inadequately. Chinese with German characters. So also grammatically and linguistically Practiced an unbelievable nonsense. An Impudence. I have returned the flash. And I'm 560 II served with the much cheaper by the same company much better. The makes for little money exactly what he should, and that very well. Since you have your mouth probably taken a little crowded, as it was claimed that one could make with Nikon TTL together.