We recently had to redo the pond on our back deck. This synth is for people to tour around the deck to see the changes.
If you are not familiar with Photosynth, it is a cool tool created by Microsoft Research. It allows you to upload a bunch of pictures and it will figure out how they fit together in 3-D space. You can then “walk” though the images. Very cool tool.
Check out Photosynth at http://www.photosynth.com.