This is one of my first attempts at water drops. Using a white bowl, food coloring, eye dropper and natural light. Shot with Nikon D5100 mounted on tripod, 18-105mm at 105mm, f/ 5.6, 1/1000 of a second, ISO 400. I would wait for a few seconds after adding the food coloring, then I would try to time my shot with the drop. It took a few attempts, but I figured out the timing pretty quickly. I plan on doing some more, with better props to make for a more interesting composition. Thanks for looking!