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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
40mm vs 50mm in new VX3
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<blockquote data-quote="Pdvdh" data-source="post: 310038" data-attributes="member: 4191"><p>Thanks. I think Leupold's answer is less than 100% correct. But I'm not going to try to convince you or anyone else that I know more than a Leupold employee. John Burns may provide a refined explanation for the advantage to the 50mm objective. I've experienced the advantage with spotting scopes in the past - 65mm versus 85mm objective. The 85mm was definitely easier and faster to capture the field of view because there is a larger exit pupil or image transmitted to the retina of the eye.</p><p> </p><p>Here's how John explained the advantage of the 50mm versus the 40mm in another thread. I have also found this to be true.</p><p> </p><p><em>• With the larger exit pupil the optic is faster and much easier to use. The 4.5-14x50mm has an exit pupil of 3.6 mm @14x and the same optic with the 40mm has an exit pupil of 2.86 mm. It is easier to see thru a 3.6mm hole than a 2.9mm hole and you can acquire targets quicker and spot your hits better thru the larger exit pupil.</em></p><p> </p><p>You can go to this thread to read the rest of John's comments:</p><p> </p><p><a href="http://www.longrangehunting.com/forums/f18/leupold-comparison-46027/index2.html" target="_blank">http://www.longrangehunting.com/forums/f18/leupold-comparison-46027/index2.html</a></p><p> </p><p>In good lighting or at less than maximum power setting, you may notice very little difference. However in dim light and/or especially on the maximum power setting, a person may find it to be easier and faster to pick up the field of view through a scope with a larger objective lens. </p><p></p><p>Enjoy your new VX-3. Let us know how you like it after you've had a chance to use it?</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 310038, member: 4191"] Thanks. I think Leupold's answer is less than 100% correct. But I'm not going to try to convince you or anyone else that I know more than a Leupold employee. John Burns may provide a refined explanation for the advantage to the 50mm objective. I've experienced the advantage with spotting scopes in the past - 65mm versus 85mm objective. The 85mm was definitely easier and faster to capture the field of view because there is a larger exit pupil or image transmitted to the retina of the eye. Here's how John explained the advantage of the 50mm versus the 40mm in another thread. I have also found this to be true. [I]• With the larger exit pupil the optic is faster and much easier to use. The 4.5-14x50mm has an exit pupil of 3.6 mm @14x and the same optic with the 40mm has an exit pupil of 2.86 mm. It is easier to see thru a 3.6mm hole than a 2.9mm hole and you can acquire targets quicker and spot your hits better thru the larger exit pupil.[/I] You can go to this thread to read the rest of John's comments: [URL]http://www.longrangehunting.com/forums/f18/leupold-comparison-46027/index2.html[/URL] In good lighting or at less than maximum power setting, you may notice very little difference. However in dim light and/or especially on the maximum power setting, a person may find it to be easier and faster to pick up the field of view through a scope with a larger objective lens. Enjoy your new VX-3. Let us know how you like it after you've had a chance to use it? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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40mm vs 50mm in new VX3
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