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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Schmidt Bender 3-20x50 PM II/LP/MTC/LT
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<blockquote data-quote="bruce_ventura" data-source="post: 689378" data-attributes="member: 34084"><p>There is nothing magic about integer multiples in the zoom range. We're now seeing anything from 2.5:1 to 10:1. High end European companies tend to give accurate magnification values. For most other companies, the marketing staff rounds off the magnification values. See this link for more information about rifle scope optics:</p><p> </p><p><a href="http://www.highpoweroptics.com/optics-tutorial-i-55.html" target="_blank">Optics Tutorial</a></p><p> </p><p>Often the very wide range scopes have some limitations. For anything greater than about 5:1, the scope tube is at least 30 mm, which increases weight. Glare performance tends to be worse in scopes with really high magnification. In the case of very low magnification (below 3X) the exit pupil is smaller than one would expect from the formula: exit pupil = objective diameter / magnification. </p><p> </p><p>Minimum range is probably limited by focus distance, rather than field of view. Check the specs for focus distance. 3X should have ample field of view for acquiring quick shots at close range, unless you're after dangerous game in thick brush. Then I would recommend 1.5X or lower.</p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 689378, member: 34084"] There is nothing magic about integer multiples in the zoom range. We're now seeing anything from 2.5:1 to 10:1. High end European companies tend to give accurate magnification values. For most other companies, the marketing staff rounds off the magnification values. See this link for more information about rifle scope optics: [URL="http://www.highpoweroptics.com/optics-tutorial-i-55.html"]Optics Tutorial[/URL] Often the very wide range scopes have some limitations. For anything greater than about 5:1, the scope tube is at least 30 mm, which increases weight. Glare performance tends to be worse in scopes with really high magnification. In the case of very low magnification (below 3X) the exit pupil is smaller than one would expect from the formula: exit pupil = objective diameter / magnification. Minimum range is probably limited by focus distance, rather than field of view. Check the specs for focus distance. 3X should have ample field of view for acquiring quick shots at close range, unless you're after dangerous game in thick brush. Then I would recommend 1.5X or lower. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Schmidt Bender 3-20x50 PM II/LP/MTC/LT
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