And on top of that there is a blind spot, where we can't see at all. That is at the point where the nerves leave the eye ball. The blind spot for the right eye is at the other side of the centre spot (yellow spot) compared to the left eye. And on top of that our brain has learned very well to compensate for it. We don't notice it at all.
Frits Wüthrich > >From what I remember from my limited biology in high school and > college... > The human eye has two distinct visual "modes" depending on how far you > are from the center axis of the retina. The circle near the center has > the ability to resolve with incredible power... Hence why we can see > things at incredibly far distances. There's an apparent price for this > resolving power... The ability to recognize movement and to see at > night. (The ability to see in color is also involved but I won't get > into that.) However the reverse is true... As you leave the central > area the resolving power goes down, but the ability to see movement goes > up dramatically. It's one of the reasons why you can see things out of > the "corner of your eye" at night yet when you turn to look at them > they're gone, or can sense tiny movements off-axis but can't see them > when on-axis. > > So basically, the center of your eye is like good old Kodachrome 25, > while the surrounding area is like MAX 800... But pushable to 3200 when > need be. > > The best of both worlds. > > Hopefully most of this was realtively accurate... Unfortunately my > memory doesn't "resolve" as well as my eyes. =) > > -- John - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
