Rain left puddles along the paths and trails of the Parc de Sceaux, on the outskirts of Paris. I positioned my camera to capture the perspective generated by the reflections of rows of trees in one puddle, and—splash!—tossed a pebble in to the water to take advantage of the concentric rings that this generated.

The underlying exposure for full depth-of-field and low noise was at ISO 100 and f/22 to capture the reflections in the puddle, while the exposure for capturing the splash part of the image was at ISO 2,000 and 1/25 of a second. Obviously this is the kind of image that usually takes some trial and error to get right—not only in terms of photographic exposure, but also where one aims the splash.