I recently found out about an interesting app for PC, Android, or Iphone. It's called 123d Catch, and it's made by AutoDesk (the maker of AutoCAD and many other advanced software). The short description is that it combines multiple pictures of an object into a 3d model that can be viewed, exported to AutoCAD or even printed via a 3d printer. It is quite a powerful application to be run on a phone, so it actually uploads the photos you take and combines them into a mesh on their server. It does take a little time for it to upload/process but it is truly a high tech app with lots of possibilities. I've only just started testing it but I can see how interesting it can be and also its many practical applications. I would recommend checking it out. The main site is here
and the intoduction videos can be found here or on youtube
I'm currently working on getting my model from an OK look up to something good. It takes a good combination of multiple shots, lighting, and good connection or overlap between shots. My subject (a cactus) might not have been the best choice as the spines are very thin and don't show to well in the pictures and therefore don't really come out in the 3d model.