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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Head position at higher magnifications
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<blockquote data-quote="Poodleshooter1" data-source="post: 513101" data-attributes="member: 28394"><p><strong>Re: Full field of view issues</strong></p><p></p><p>Are you comparing both optics on 4x to keep things even? </p><p></p><p>At 15x, you have a 3.33mm exit pupil on that optic. At 4x, you'll have a 12.5mm exit pupil. Compare the difference in area between a circle with a 3.33mm diameter and one with a 12.5mm diameter, and you'll see why you can't move your eye around as much at 15x without the view winking or crescenting out.</p><p></p><p>Or is the issue related to eye relief (back and forth movement)?</p><p></p><p>Usually a scope with low magnification and longer eye relief will seem to have a better eyebox. It varies with construction between brands, though I'm not sure how to quantify that.</p></blockquote><p></p>
[QUOTE="Poodleshooter1, post: 513101, member: 28394"] [b]Re: Full field of view issues[/b] Are you comparing both optics on 4x to keep things even? At 15x, you have a 3.33mm exit pupil on that optic. At 4x, you'll have a 12.5mm exit pupil. Compare the difference in area between a circle with a 3.33mm diameter and one with a 12.5mm diameter, and you'll see why you can't move your eye around as much at 15x without the view winking or crescenting out. Or is the issue related to eye relief (back and forth movement)? Usually a scope with low magnification and longer eye relief will seem to have a better eyebox. It varies with construction between brands, though I'm not sure how to quantify that. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Head position at higher magnifications
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