Where are the leaves ? Jus press the string button.
I started with a bundle of leaves and then took away one after the other. The series ended with the surface (a pullover). Photosynth reconstructed a point cloud of each single leave and if you press "strg" you can see them transparent and all together....
Or try this: First zoom out, to get distance from the pictures, press "P" three times and then press "," several times. Or just rotate the ring in the middle of the picture...Then the leaves will come back or disappear as if they where taken from magic hands...