My Uncle John used a Stereo Realist back in the day. In addition to being a physicist and working with Radiation Labs in Cambridge during WW II he had a master's in optics, so I'm sure he made his choice in an informed manner. Got some wonderful shots....

Someone suggested a 3 D adaptor for a 35mm SLR, scanning in the result and viewing on a 3 D TV. Genius idea! We have a 51 inch Samsung 3 D TV. Now to find the adaptor.....