Ok so I am using a Nikon D5100 for about 9 months and I am still loving it. I am shooting indoor sporting events, street walking, and I am starting learn more. Right now the lens I am finding my self using the most is the 18-200 3.5-5.6 nikkor lens. I am tired or the little pop up flash and I want something more powerful. I have the money to get the SB-910, but will it work for my camera on and off body? I am still new to the DSLR world and I am still leaning with every shot that I take. For a newbie, is this flash going to be to much for me, or will the camera control that flash. I am still playing around to get off auto mode and get into a priority mode. Any advice is welcome please.