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Binoculars & Spotting Scopes
Binoculars
Magnification vs. Exit Pupil
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<blockquote data-quote="BobinKy" data-source="post: 1578215" data-attributes="member: 58027"><p>Kevin...</p><p></p><p>Please don't doubt yourself. This whole thread is pretty subjective anyway. I mean, there are just too many variables. I know my 7x50 out performs any other binocular I have in low light because I have compared them so many times before. But the whole thing hinges upon light. Doesn't it? And a rising full moon does brighten the landscape as it rises in the sky, as it has been doing this evening. And the last animal I compared was the buck deer eating in the full shade of an apple tree. . . . Pupil dilation is another variable. My dark-adapted pupils were tested last spring at 6.5mm by my eye doctor. She told me an interesting observation that in her practice, she has noticed that people with blue eyes retain larger pupil dilation as they age, than people with other color eyes. . . . The only way to really quantify this thread is with a light meter and resolution chart. . . . Oh well--it's 12:45 a.m. and I am off to bed. This has been a fun thread--the subjective ones always are! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>...Bob</p><p>Kentucky</p></blockquote><p></p>
[QUOTE="BobinKy, post: 1578215, member: 58027"] Kevin... Please don't doubt yourself. This whole thread is pretty subjective anyway. I mean, there are just too many variables. I know my 7x50 out performs any other binocular I have in low light because I have compared them so many times before. But the whole thing hinges upon light. Doesn't it? And a rising full moon does brighten the landscape as it rises in the sky, as it has been doing this evening. And the last animal I compared was the buck deer eating in the full shade of an apple tree. . . . Pupil dilation is another variable. My dark-adapted pupils were tested last spring at 6.5mm by my eye doctor. She told me an interesting observation that in her practice, she has noticed that people with blue eyes retain larger pupil dilation as they age, than people with other color eyes. . . . The only way to really quantify this thread is with a light meter and resolution chart. . . . Oh well--it's 12:45 a.m. and I am off to bed. This has been a fun thread--the subjective ones always are! ;) ...Bob Kentucky [/QUOTE]
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Magnification vs. Exit Pupil
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