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3D Cinema Doesn't Work and Never Will
circletimessquare writes "Walter Murch, one of the most technically knowledgeable film editors and sound designers in the film industry today, argues, via Rogert Ebert's journal in the Chicago Sun-Times, that 3D cinema can't work, ever. Not just today's technology, but even theoretically. Nothing but true holographic images will do. The crux of his argument is simple: 600 million years of evolution has designed eyes that focus and converge in parallel, at the same distance. Look far away at a mountain, and your eyes focus and converge far away, at the same distance. Look closely at a book, and your eyes focus and converge close, at the same distance. But the problem is that 3D cinema technology asks our eyes to converge at one distance, and focus at another, in order for the illusion to work, and this becomes very taxing, if not downright debilitating, and even, for the eyes of the very young, potentially developmentally dangerous. Other problems (but these may be fixable) include the dimness of the image, and the fact that the image tends to 'gather in,' even on Imax screens, ruining the immersive experience."
Vision scientist here ... sorry to have to disagree with you, but actually they are linked ... mostly for very near objects though, so the problems mentioned would be worst for handheld video games like the 3DS.
From this reference:
According to Prof. Martin Banks, Professor of Optometry and Vision Science at U.C. Berkeley, the vergence-accommodation conflict should be kept at less than ½ to 1/3 diopters for the majority of a 3D viewing experience to avoid discomfort and fatigue.
Which means if you are sitting ~16 feet from the screen, things can come ~10 feet out of the screen without you having any discomfort or fatigue. That is plenty of depth budget for most 3D movies. Thus, focus/vergence mismatch is not a real problem for stereoscopic 3D cinema.
Now if you are ~20 inches from the screen, things can only come out ~3 inches out of the screen before potential discomfort or fatigue, so vergence/focus mismatch is a real problem for small screens. Thus personal gaming devices, computers, and televisions will need careful depth budgeting in stereoscopic 3D.
"Super multiview" non-glasses 3D displays (generally with >32 views) where more than one parallax image is projected into your pupil at a time can force you to focus on the virtual 3D image where your eyes converge (this is how a hologram or the real world works, only they have nearly infinite number of parallax views).