I'm an amateur photographer whose son just recently got married. I brought my camera (a new 6D) to the wedding and reception and took pictures, carefully trying not to interfere with the professional photographing the events. While I was pleased with many of my photos, my biggest mistake was bringing only one lens, a 50mm f1.4. I woefully lacked sufficient depth of field in several shots (even with flash and ISO 3200) as both venues were dimly lit and the reception venue was extremely tight and crowded. Since I'm mainly an outdoor/nature photographer, I'm curious what you wedding pros consider your best and most reliable lenses to use at events with similar shooting conditions to what I mentioned. Thanks!