Sorry for not posting my impressions with the link.
I would say: no need of two cameras and two sets of lenses, no expensive and heavy rigs, no getting crazy to collimate the lens and videos, no hundred feets of cables, less crew people around the camera. If we added all these costs, maybe it would be a covenient option even for a medium-low budget 3D movie. (No need to make Transformers 4, or anyway, not only that.)
Good thing to understand - you actually need to change distance between lenses for different scenes (large for big landscapes and small for indoor ones).
Anyone who used consumer 3D cameras know about their disadvantage, and this is why people use 3D rigs.
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