[AdamTReineke]

This wouldn't work smoothly because each image would be, for example, 2 inches wide. You may have several frames per image, but then your eyes would have to jump two inches to the next frame. The old style zoetrope would have a much cleaner effect.

[shashashasha]

That's actually one reason why we're limiting things to up/down rotation also — the spacing of your eyes makes it hard to display lots of frames accurately when you're rotating it left/right. And zoetropes, so cool! We really want to try some of these out too: http://www.thisiscolossal.com/2013/10/the-first-animated-gif...