I have always had trouble with magic-eye pictures - I am told my eyes are quite different shapes. I can see stereograms with some effort.
I believe that there is a small percentage of the population for whom stereoscopic images (including 3d films) just don't work at all. Either they lack the ability to perceive depth directly or their brains aren't fooled by images with no parallax relative to their eye movements. I don't have any cites for this though.
I believe that there is a small percentage of the population for whom stereoscopic images (including 3d films) just don't work at all. Either they lack the ability to perceive depth directly or their brains aren't fooled by images with no parallax relative to their eye movements. I don't have any cites for this though.