Re: Optical Gunsight and one eye pilot.

On Wed, 19 Oct 2005 13:57:01 -0500, "Emilio" <emiliosan@xxxxxxx>
wrote:

>If we try to
>"see" one reticle, that is both eye angled to focus at reticle image 2.5
>feet away,

But you don't focus 2.5 feet away; you focus at infinity.

I had to learn this for myself, picking up the mail, which I do by
driving out to the end of the road, turning away from the mailbox, and
then backing up with the mailbox in the rearview mirror. I wear
bifocals, and my experience tells me that because the mirror is so
close, I should be looking at it with the reading (bottom) lens. But
this leads to instant eyestrain! Though the mirror is near, the image
is distant, and it has to be viewed through the distance lens.

(I am, incidentally, a one-eyed pilot. A one-eyed individual focuses
near and far, without bringing a second eye into it. The only times I
have ever noticed a disadvantage is in playing ball, though that might
also be attributed to klutziness, and in taxing a plane close to
another plane. The wingtip is about 17 feet from me, and that is the
distance at which it is just about impossible to judge things without
binocular vision. Everything else--parallel parking, for example, is
simply learned from experience.)




-- all the best, Dan Ford

email: usenet AT danford DOT net

Warbird's Forum: www.warbirdforum.com
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