So my girlfriend and I were shooting a wedding together last last weekend, and we were both taking the same shot of the bride and groom. After we took the photo, I looked at my screen and noticed that it was blown out. "Strange" I thought. My flash was on manual and my other shots were properly exposed. Then I noticed my girlfriend had the same problem with her picture. We had caught each other's flashes! I was at 1/60th of a second, and she was at 160th! We must be made for each other, huh?
Here's mine:




