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Binoculars & Spotting Scopes
Binoculars
"Phase Compensation of Internal Reflection" by Paul Mauer, J. Opt. Soc. Am. 56, 1219
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<blockquote data-quote="ronh" data-source="post: 1306768" data-attributes="member: 55514"><p>I took my 7x50 Fujinon out owling this evening, instead of my usual 8x42 Trinovid BA. I use that Leica all the time, and it is optically good, and mechanically excellent. I never heard any complaints about the view being soft, as mentioned in a post above. There is simply nothing to complain about, it is good enough for any normal person. It is hard to imagine anything sharper, and you'd think if anything was, then your eyes wouldn't be good enough to tell a difference. But the Fujinon.....I know it sounds silly and poetic, but crystalline clarity are the only words I can think of. I was in ecstatsy the whole time, even though we did not see a single one of those hooty suckers.</p><p></p><p>It is hard to argue with data, and I often read statements like "any decent binocular will present finer detail than the eye can resolve, at least mid field, thus there are no differences in perceived sharpness". It just isn't true. </p><p></p><p>I certainly don't claim to know why. And I must sadly admit that the paper referred to at the top of the post does not make clear to me how the shift in phase between s and p polarizations occurs. It seems to talk about other things, and take this fact as the starting point, as have the very learned posts in this thread. That, however, is what I would like to understand. But not being able to, at least from the information presented here, at least I will say what I see, which supports the difficulty of getting a roof quite up to the level of view clarity of a good porro. </p><p>Ron</p></blockquote><p></p>
[QUOTE="ronh, post: 1306768, member: 55514"] I took my 7x50 Fujinon out owling this evening, instead of my usual 8x42 Trinovid BA. I use that Leica all the time, and it is optically good, and mechanically excellent. I never heard any complaints about the view being soft, as mentioned in a post above. There is simply nothing to complain about, it is good enough for any normal person. It is hard to imagine anything sharper, and you'd think if anything was, then your eyes wouldn't be good enough to tell a difference. But the Fujinon.....I know it sounds silly and poetic, but crystalline clarity are the only words I can think of. I was in ecstatsy the whole time, even though we did not see a single one of those hooty suckers. It is hard to argue with data, and I often read statements like "any decent binocular will present finer detail than the eye can resolve, at least mid field, thus there are no differences in perceived sharpness". It just isn't true. I certainly don't claim to know why. And I must sadly admit that the paper referred to at the top of the post does not make clear to me how the shift in phase between s and p polarizations occurs. It seems to talk about other things, and take this fact as the starting point, as have the very learned posts in this thread. That, however, is what I would like to understand. But not being able to, at least from the information presented here, at least I will say what I see, which supports the difficulty of getting a roof quite up to the level of view clarity of a good porro. Ron [/QUOTE]
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Binoculars & Spotting Scopes
Binoculars
"Phase Compensation of Internal Reflection" by Paul Mauer, J. Opt. Soc. Am. 56, 1219
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