The following are some stereoscopic shots ... the way to view them is to cross your eyes, you should start to get "doubles" for each of the images, but the 'middle doubles' can be combined together to form one center image .. then focus on that center image to see the 3D depth of the images (this is similar to the "Magic Eye" color pictures).
There is a very complicated technique to create these ... tape two disposable cameras together end-to-end and snap both pictures at the same time - tough, huh?
These are some of the better ones (the effect is better on the original photos obviously). The first truck one and the first camera/balloon one seem particularly good.
hotair01.jpg
hotair02.jpg
hotair03.jpg
hotair04.jpg
hotair05.jpg
truck01.jpg
truck02.jpg
camball1.jpg
camball2.jpg
See some of my other Ballooning web pages here :