Hi fellow csers, newbie here, would like to seek your advice on what lens to use, i currently have a 35mm AF-S and 18-55mm kit lens..i am planning to buy a flash (currently leaning towards sb-600) and I will be using it on an indoor wedding event..as I do not want to change lens, I am thinking of bringing only one lens..so If you were in my shoes, which would you bring? It also got me thinking, aside from the shallow DOF, what advantage does a prime lens have if I have a speedlite already? Wouldn't my pictures offer the same sharpness because I already have ample source of light? I plan to use low ISO because of the flash, would they offer the same performance? thanks..