3d or stereo photography?

You will get more/better answers on the "3D and Stereo Photography" forum on this site.

CAPTURE of stereo images is very simple nowadays, using either a dedicated digital stereo camera (Fuji W1 or W3), a cobbled together pair of cams with a ganged release, or running CHDK freeware (digital Canons), or simply shifting sideways between two consecutive shots using a single digital cam (called the 'cha-cha' method) and then using StereoPhotoMaker freeware to process the shots taken by any of the above (typically for perfecting alignment and stereo window adjustment).

VIEWING has been the real issue with stereo photography. The best experience is with dual high resolution screens viewed with apparatus that separates the two views so ONLY the right eye sees the right image, and the left eye sees the left image. Google Cardboard is an inexpensive example with very low resolution. All other methods (and there are plenty) have issues with crosstalk (aka, "ghosting") between the two images.

However, there is another method that requires no viewing apparatus at all! That is called "freeviewing", where with a little training you can use your own eyes to do the trick. One method is discussed here:

www.neil.creek.name/blog/2008/02/28/how-to-see-3d-photos/

This is the crosseye method, which permits freeviewing of much larger image pairs than the "parallel" method, which requires you to diverge your eyes (which is VERY uncomfortable) for images that centered wider than your interoccular distance (typically 63-65mm in an adult).