Tourists on Charles Bridge, Prague, Czech Republic
I set my tripod on the center of the bridge at dusk to take some long exposures of people walking along the bridge. But I got really lucky with the couple on the left taking a photo of themselves. I had no idea that would happen and their positioning and timing is perfect! I didn’t even notice it at the time as I was busy moving around composing. But once I got back to the computer everything was revealed.