I am a photographer and I photograph a lot of people to include weddings. Recently I bought a Nikon D600 and a SB800 speed light. I am trying to learn everything I can about my new items but Im so busy that I just need some professional helpful hints or ideas. When I shoot with my SB800 on my camera ( I work alone a lot and move around a lot so having it external is not always an option) I m getting a lot of over exposed pics. It just too bright no matter where I adjust it, then if i don't use it its either to dark or I get shadows. From the advice of another photographer I usually shoot in auto mode. What am I doing wrong or what can I do to help correct this. Its getting frustrating as it doesn't happen all the time. I do test shots to check but that doesn't always work either. I think I just need to do some adjusting of the light and possibly the camera. Any ideas anyone?