Over the Winter Break, I went to the Caribbean to travel. One of the places I visited has a natural arch. I took a picture of it with my T2i, and it blend right into the background along with other rocks. My father took a picture of it with his 3D Camera, and it turned out perfectly.
So after the trip, I did a brief search on the 3D technology, how it work and such.
Here, I came up with a Photoshop action that create Anaglyph 3D Red/Cyan Image from 2 normal pictures taken from a digital camera.
It is the easiest with a DSLR:
1) Use left eye on the viewfinder and focus on a point
2) Take a second picture with right eye on the viewfinder and focus back on that point. Make sure you are standing still, and shift the camera from left eye to right eye instead of shifting your head or body
3) In Photoshop, open left eye image
4) File => Place Right eye image and click on the check mark
5) Run the Anaglyph 3D action (download link below).
* You can probably use your phone camera, but just make sure you simulate that shifting view. It is important that the distance you shift the camera match the distance between your eyes.