Just for fun…without looking up or checking anywhere on the internet, what do you think the average focal length of typical human vision is? Add your comments to guess! Ill post some interesting specs on human vision later.

Here they are:

Notes on the Human Eye:

Equivalent Lens Focal Length: ~22mm
Aperture Range: f 2.1 – 8.3
Equivalent Mega Pixels: ~576MP
Dynamic Range- 10,000 range in contrast detection

ISO Range is changed by amounts of Rhodopsin levels

Eye Resolution Article
Wiki Article on Apertures