Several older films like Jaws are being rereleased in 3D. How do the studios convert the film from 2D to 3D? I thought 3D required filming with two cameras.
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Proper 3D does require two cameras, but you can cheat it somewhat with a 3d-ifier device which can simulate turning 1 video stream into 2. Lots of maths and video processing and the results are okay-ish – good enough to slap a 3D label on a DVD, but limited, with some shots behaving better than others.
I know as we made a movie best part of a decade ago when 3D was still riding the wave from Avatar – the sales agent thought they could sell it better using 3D as a gimmick, so paid for the “conversion” (€1500 or so) to make a mediocre 3D version. Technology improves, but ultimately it’ll never be “real” 3D
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