Stereoscopy for Your DSLR
Submitted by Shawn on January 4, 2008 - 5:23pm.
From CNET
I recently came across the Loreo 3D Lens in a Cap, a stereo lens that works on most film or digital SLRs. It's a 38mm lens with an f/11 of f/22 aperture that takes two images of the same scene from slightly different perspectives.
Loreo also sells a basic $24 3D viewer into which you can put 4x6 printouts of your stereo photos. The lenses cost between $48 and $117, depending on what model you buy.