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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Tough Question On Scope: Objective & Exit Pupil
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<blockquote data-quote="iSnipe" data-source="post: 411151" data-attributes="member: 13596"><p>Hey Guys!</p><p> </p><p>Ok, got a question here that I once knew but now forgot. I don't know the exact terms,</p><p>so I'm sort of guessing...</p><p> </p><p>My question has to do with the objective side of the scope and the exit pupil, I think.</p><p>It has something do with regardless of the size of the objective lense(bell), and what</p><p>power one is using, <strong>only so much light can go through to the eye</strong>. It had some thing</p><p>to do with 5.</p><p> </p><p>On a 3-9x40mm scope, I think the setting that allows the most optimum or maximum</p><p>light through is the 8 setting. Reasoning: Dividing 40 by 8 = 5.</p><p> </p><p>Here's another example: Using a 3-10x50mm, 10 would be the maximum light allowance</p><p>setting because 50 divided by 10 = 5.</p><p> </p><p>I'm not sure if I have this right, but I'm somewhere close, I think.</p><p> </p><p>What I'm trying to figure out, is how to figure out or determine what scope(40mm,50mm)</p><p>to get that allows me the best light transfer based on a certain setting... not scope brand.</p><p>If I recall correctly, it was once told to me that you get to a certain point and it's no longer</p><p>helpful because the eye can only soak in so much light.(or something to that effect)</p><p> </p><p>One may think to get the largest bell or object lense(mm) and problem solved,</p><p>but it's not that easy.</p><p> </p><p>I'm going to buy a new scope. It will either be a 3-9x40mm or 3-9x50mm. I don't</p><p>necessarily need the widest view, like what the 50mm will do, but trying to figure</p><p>what I wrote above.</p><p> </p><p>Do you know what I mean?</p><p> </p><p>Your help would be appreciated.</p><p> </p><p>iSnipe</p></blockquote><p></p>
[QUOTE="iSnipe, post: 411151, member: 13596"] Hey Guys! Ok, got a question here that I once knew but now forgot. I don't know the exact terms, so I'm sort of guessing... My question has to do with the objective side of the scope and the exit pupil, I think. It has something do with regardless of the size of the objective lense(bell), and what power one is using, [B]only so much light can go through to the eye[/B]. It had some thing to do with 5. On a 3-9x40mm scope, I think the setting that allows the most optimum or maximum light through is the 8 setting. Reasoning: Dividing 40 by 8 = 5. Here's another example: Using a 3-10x50mm, 10 would be the maximum light allowance setting because 50 divided by 10 = 5. I'm not sure if I have this right, but I'm somewhere close, I think. What I'm trying to figure out, is how to figure out or determine what scope(40mm,50mm) to get that allows me the best light transfer based on a certain setting... not scope brand. If I recall correctly, it was once told to me that you get to a certain point and it's no longer helpful because the eye can only soak in so much light.(or something to that effect) One may think to get the largest bell or object lense(mm) and problem solved, but it's not that easy. I'm going to buy a new scope. It will either be a 3-9x40mm or 3-9x50mm. I don't necessarily need the widest view, like what the 50mm will do, but trying to figure what I wrote above. Do you know what I mean? Your help would be appreciated. iSnipe [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Tough Question On Scope: Objective & Exit Pupil
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