Drip from a common campground faucet. I saw it dripping, and thought I could have some fun with it. I'm a total amature, so the first afternoon I tried a few shots. I looked at them on the computer that evening and realized that I had missed the "drip" in most shots, and that it was quite blurred even if I did get it. So the next day I shot at higher speeds, letting the camera choose the f/stop. It took me more than 100 shots to get this one. What really surprised me was the tiny "dripletts" above the primary drip. I now realize that this is a normal dymamic of a slow drip.