It's probably fair to say that the 3D revolution hasn't panned out exactly as James Cameron envisioned. Avatar was released over two years ago, so by now you would have thought that cinema would be awash with similarly high-reaching 3D epics. But no. Instead we've got a tidal wave of ropey conversion jobs, an increasingly suspicious public and the very real threat that 3D will have caved in on itself by the time Avatar 2 gets released.
This could be the reason for James Cameron's recent decision to dementedly prop up all of 3D by himself. Last year he executive produced Sanctum, a kind of 3D subaquatic spelunking drama that was notable only for Cameron's involvement – something the