"The new iPhone camera is 8-megapixels. Meanwhile, Canon is reportedly testing a new DSLR with 75-megapixels. But how many megapixels is the human eye? That is, how many megapixels would an image the size of your field of vision need to be to look normal?
Well, as Vsauce explains in its latest video, the better question is actually: What is the resolution of the human eye?"
-Adam Clark Estes, Gizmondo