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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
This is what I want in a scope. What options are there?
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<blockquote data-quote="Technologist" data-source="post: 1690240" data-attributes="member: 62954"><p>I have really wondered about this, and how the two scope characteristics (glass quality and objective size) compares, when it comes to resolving power in low light.</p><p></p><p>As far as I understand, because the pupil of the eye can open up to about 5-7 mm, and thus a 40 mm objective is best used with 6x magnification, as that gives roughly a 7 mm stream of light through the ocular. Lower magnification should be perceived as just as bright, but obviously with less magnification and thus it would be harder to see the target. With a smaller objective, say 24 mm, my 30 year old eyes wouldn't be able to make use of a magnification over 3-4x, before the image would appear darker. It might be that I'm botching the science here, but that's the best understanding I've been able to get. A lot of the articles on the subject are written as if they are scientific fact, while in reality they mostly remind me of the writings on "TKO" of old.</p><p></p><p>So well, if the z8 and z6 scopes with 24 mm objective perform better or worse than my old ragged Nikon with the 40 mm objective, I don't know. I'd love to see a thorough test.</p></blockquote><p></p>
[QUOTE="Technologist, post: 1690240, member: 62954"] I have really wondered about this, and how the two scope characteristics (glass quality and objective size) compares, when it comes to resolving power in low light. As far as I understand, because the pupil of the eye can open up to about 5-7 mm, and thus a 40 mm objective is best used with 6x magnification, as that gives roughly a 7 mm stream of light through the ocular. Lower magnification should be perceived as just as bright, but obviously with less magnification and thus it would be harder to see the target. With a smaller objective, say 24 mm, my 30 year old eyes wouldn't be able to make use of a magnification over 3-4x, before the image would appear darker. It might be that I'm botching the science here, but that's the best understanding I've been able to get. A lot of the articles on the subject are written as if they are scientific fact, while in reality they mostly remind me of the writings on "TKO" of old. So well, if the z8 and z6 scopes with 24 mm objective perform better or worse than my old ragged Nikon with the 40 mm objective, I don't know. I'd love to see a thorough test. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
This is what I want in a scope. What options are there?
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