While I was reading this article I actually pulled out my phone and moved it around near my eye until I could get the camera picture to 'line up' with its surroundings. It was indeed possible (and somewhat trippy), but the phone was about 2.5" from my eye. So yeah, assuming you're not holding your phone that close (as no one is, since few people can even focus that close, myself included,) it's going to be smaller than reality.