My wife and I do wedding photography during the summers to pay the rent and go to a few movies. Yesterday we shot a wedding and when my wife was taking portrait shots this amateur photographer with the entry level Nikon D-whatever (I don't know jack about Nikons, we're Canon all the way!) stood right behind her and took her exact shots and even tried to time them just right to take advantage of our lighting set up. Talk about irritating! It feels almost like copyright infringement as we spend a lot of time metering the light and working with the subjects to get them into an ideal position/expression. On top of that some of the bridesmaids were getting confused and kept looking at him ruining the otherwise good shots we getting. So, my question is, does anyone have any tactful ideas on ways to avoid this in the future? Have you run into a similar problem? Any ideas (even ludicrous ones) are welcome!