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Posted: 4/21/2010 12:51:56 PM EDT
| Can someone explain to me what parallax is? |
|
parallax is the change in an image from two different points of view, and is measured as the angle or half-angle between the sight line of the two images.
Your stereo binocular vision results from the fact that there is a parallax between the images from your left eye and your right eye. |
| Here's what I don't get about that explanation. One of my optics has parallax adjustment. I use it when, at one distance, I can focus on the target but the reticle is blurry, and vice-versa. So I adjust the parallax to get both clear. Then at another distance, I adjust again. Does that make any sense? |
| Yep, that how you do it. I focus the eye piece at a known distance first, and leave it alone. Then I use the side focus (which isn't really a focus) to adjust the parallax. If you mis-adjust the parallax and move your head while looking through the scope, the reticle will seem to move. That throws your shot off. Most scopes without a parallax adjustment are preset to 100 yards, and most lower powered scopes aren't adjustable because the problem isn't as prevent at lower magnification. |
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