Shoot, Roger, just go out with a sliding camera mount and shoot two frames with the camera you have. That way you can use your existing lenses, the resulting pair of slides can be thought as "in-camera dupes" as Galen Rowell used to call them.
Originally Posted by Roger Cole
They can be 2-D or 3-D as the occasion calls for it.
For example, any of Polyglot's stereograms, would stand alone well as a 2-D photograph because of the rich imagery...
It's just icing on the cake that there's a stereo pair in there!