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Shooting With Two Cameras (3D Video)

by Rogerz Jayzee

If you want to keep shooting as simple as can be, all you have to do is mount both similar cameras on a support. A 2x4 will work.

Spend some time making sure that both cameras are pointing straight ahead so that the normals for both camera lenses are parallel. In other words, if a beam of light was shining out of each lens, the beams would be parallel to each other and would not cross.

The distance between the 2 cameras lens centers must be known (stereo base or inter-ocular distance). The cameras should be as close as possible. You can even mount one of the cameras upside down if it will get it closer to the other camera.

The point is that the closer you can get the lens centers, the greater the 3D window you will have to work with.

Since the cameras are pointing straight ahead, you will be shooting in PARALLEL 3D instead of CONVERGED 3D (most movies are shot in converged 3D including Avatar).

The advantage to parallel 3D for low-budget filmmakers is that you don't have to adjust the cameras to establish the POC. The cameras are always pointing straigh ahead. However, you will need to set the POC later on in post.

You will also have to do some image cropping. It's a trade off but the resulting stereo images from both techniques are pretty much the same. Side by side, nobody would know one from the other.


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