In the beautiful morning sun of a crisp new morning after all the rain, I photographed these water drops on a leaf using nested extension tubes.
Related images: Earth in a Drop of Rain; Wet Leaf.
[Nikon D300, 200mm f.4 macro (300mm in 35mm terms), 72mm of combined extension tubes, 1/10 of a second at f/40 and ISO 100, tripod mounted.]