It's also said the focal length of the human eye is 25mm, approximately the size of the eye itself.

As everyone else has remarked, there's no easy way to reproduce what - or how - a human sees because there's a lot going off in the brain which we still don't understand.

Case in point, the human eye is actually a pretty ropey piece of optical equipment.  The mechanics of how the eye works are well known and documented.  The real fun begins after the nerve impulses leave the back of the eye, since nobody knows how they're turned into an image of such remarkable fidelity.  I use fidelity in a rather loose sense here, since we can't see a great deal of the EM spectrum, nor can we see in as much clarity as some animals, and compared to pigeons, our retina responds with glacial slowness.  Still, given all that, we can see pretty damn well.

There's some recent research which suggests we recognize things by their edges first, and our perceptions respond to bumpiness most of all.  So I guess a sillhouette of NVIATWAS would be top of the list for recognition. :D  

 

 

Coppula eam se non posit acceptera jocularum.

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