I took this candid shot of the two girls who were the other side of the river. I took one shot and I think the girl on the right must have said to her friend that I had taken a photo of them because the girl on the left turned her head towards me and smiled. They just looked very happy
Somehow if you are out with a "real" camera instead of a cell phone or tablet you are perceived as a professional any more. So they may have thought that about you.