I was shoting the celebrations at a relative's wedding using Nikon D200 with SB600 flash unit. I ran up against several issues affecting the result: 1. In the poorish light the camera had difficulty autofocussing and with people dancing about manual focus in poor light was difficult too. What do others do in this situation? 2. I tried bouncing the flash, and had to manually increase the flash output up to 2 stops to get a good exposure - I was under the impression that the SB600 was able to compensate when bouncing without intervention. All suggestions for coping with these issues in the future gratefuly received!