Many photographers and brides have become aware of how excited or inconsiderate guest are when it comes to photography. You may have a guest who thinks they should have been the photographer, the uncle or aunt who has to get every moment, or someone who simply are in the wrong place at the wrong time. The photographer doesn't have time to be mad about it, because addressing this issue may result in missing another moment or ruining the mood of the celebration. Therefore, many professionals say the best solution is to request their be no cell phone pictures or cameras present at the ceremony. I agree with this idea to have the officiant make announcement at the wedding and maybe even at the reception. Check this link out to see classic failures in which you would not want to happen to your wedding photos.