That picture in particular has a really interesting parallax effect - view it in stereo and move your head around. For me, the back rank seems to shift a lot wi

That picture in particular has a really interesting parallax effect - view it in stereo and move your head around. For me, the back rank seems to shift a lot with head position, even though the image itself is (obviously) stationary. Regular Magic-Eye pictures do this too, but to a much less noticeable degree.