This is a well known system, there are images of my 4mirror rig on my website and you can find more information at 3dphoto.net forums for stereo photographers.
This system is easier than 2 cameras because you have no sync problems with the video later.

http://www.hizook.com/blog/2009/06/26/computational-cameras-exploiting-megapixels-and-computers-redefine-modern-camera

I forget who/where I saw this link posted. But some fun things cameras can do with just a little bit of computer assistance.

Simple things like this are covered at the start of the video, but the whole thing is well worth the time IMO.

I bought a Loreo (http://www.loreo.com/) a while back for my nikon – not very bright but gives great 3D results and was cheap and easy. I wonder how it compares to this multi-mirror setup.

Glad to see they used first surface mirrors. Also, gaad I still hate instructables.

Can’t wait to see the headcam version ;)

Good point about no sync issues as with using two cameras, which is especially important when shooting video because even slightly out of sync and things don’t quite seem right, like watching anaglyph or side-by-side version of footage which was shot/created especially for field-sequential viewing as each frame for each eye is offset to each other time wise.

Uh….OK….but….

It’s common knowledge amongst photographers that viewing a single image with just one eye open will also produce the 3-D effect. Works on TV, too.

And the ‘one-eyed person’, although the 3-D effect isn’t normally perceived in the real world, should still be able to perceive the 3-D effect with single photographs and TV, too.

Why? Because viewing ‘flat images’ with just one eye open is much the same as seeing it like a camera lens sees it. The informational cues are there (depth of field, etc.) and the mind
is able to matrix the information and create the optical illusion of depth.

Try watching TV some time with one eye shut. It’s especially effective in close-up scenes with a lot of objects at varying distances and you’ll especially notice it when you see graphics superimposed over a commercial, for instance.

You could achive a 3d effect by taking the same picture once placing the viewfinder on your right eye and another photo with your left eye.