In article <31F6D3A7.711E@reed.edu>, dbaggott@reed.edu says...
> [..] FWIW, you can determine which eye is dominant using the following >method: with both eyes open and your arm fully extended, hold one of
>your fingers up and line it up with some distant object. Now without
>moving your finger, close one of your eyes. Then open it and close the >other. For one of the eyes, when you close it your finger will suddenly >'jump' and no longer be aligned with the distant object. (Note: the closer >the 'distant object' you choose the less your finger will 'jump' and if the >object is too close your finger won't 'jump' at all.) Your dominant eye is >the eye that causes the finger to 'jump' when you close it. Ken, I bet if >you do this you'll find that you're left-eyed. Just out of curiosity, is >there anyone out there who doesn't use their dominant eye to look through
>the viewfinder? I suspect not, but you never know...

Hmmm, though I grew up with monocular vision, switching from the right
eye for distance to the left for close viewing, the above demonstration
does not work - I see two fingers at all times when looking at a distant subject, so lining "it" up with the distant subject is impossible! The
above should only work with people who do not have binocular vision, for whatever reason. (BTW, my VF eye is left, I am right-handed [with strong ambidexterous tendencies...;-], and I have recently converted back to a semblence of monocular vision by choosing bifocal glasses lenses with four focus distances chosen to give me continuous sharp vision from infinity to about one foot [alternating eyes as distance is shifted] with eyes that no longer focus very well.)
Hope This Helps