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Can Parallax Adjustment Greatly Affect Point of Impact at Various Ranges?
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<blockquote data-quote="HeskethPritchard" data-source="post: 170918" data-attributes="member: 6757"><p>FCH</p><p> </p><p>If an optical instrument is imprecisely focused, the cross-hairs will appear to move with respect to the object focused on if one moves one's head horizontally in front of the eyepiece. This is why it is important, to carefully focus in order to 'eliminate the parallax', and to check by moving one's head.</p><p> </p><p>Not sure if this is helpful to you.</p><p> </p><p>I know on my scopes that have parallax adjustment they are not precise but I have not done enough testing at the longer ranges to determine how good or bad they are.</p></blockquote><p></p>
[QUOTE="HeskethPritchard, post: 170918, member: 6757"] FCH If an optical instrument is imprecisely focused, the cross-hairs will appear to move with respect to the object focused on if one moves one's head horizontally in front of the eyepiece. This is why it is important, to carefully focus in order to 'eliminate the parallax', and to check by moving one's head. Not sure if this is helpful to you. I know on my scopes that have parallax adjustment they are not precise but I have not done enough testing at the longer ranges to determine how good or bad they are. [/QUOTE]
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Can Parallax Adjustment Greatly Affect Point of Impact at Various Ranges?
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