Friday, April 18, 2008

Optics question

One of my pet peeves in binoculars, telescopes and other optics aids is that wink one gets when one's moves eye. In other words, if you don't keep your eyes really centered at the lens, you get that "wink" that causes the image being viewed to disappear.

Is there a term to ask for when buying quality optics to allow for more forgiveness when the eye moves off center?

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