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Binoculars & Spotting Scopes
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Zeiss
Zeiss uses AK prisms - so why not an open bridge design?
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<blockquote data-quote="henry link" data-source="post: 1743929" data-attributes="member: 6806"><p>Ed,</p><p></p><p>We agree about long distance, no advantage goes to either. I'm happy enough with the extra 3-D in Porros at mid distances beyond about 20-25'. Things begin to bug me at closer distances. Inside 15' I don't really like any Porro, but especially if the objective spacing is wide, the AFOV is narrow and the magnification is high. I'm sure you'll see what I'm talking about if you give yourself a large dose by looking at an object at the closest focus of your 8x32 SE. No one could tolerate for long such a cross-eyed view, with an object of interest forced toward the edges of two nearly separated fields. The 8x56 FL seems to be a pretty good compromise for me. It has a little extra shot of 3-D compared to straight through for entertainment value and a much more comfortable close focus image compared to a wide Porro. </p><p></p><p>Henry</p></blockquote><p></p>
[QUOTE="henry link, post: 1743929, member: 6806"] Ed, We agree about long distance, no advantage goes to either. I'm happy enough with the extra 3-D in Porros at mid distances beyond about 20-25'. Things begin to bug me at closer distances. Inside 15' I don't really like any Porro, but especially if the objective spacing is wide, the AFOV is narrow and the magnification is high. I'm sure you'll see what I'm talking about if you give yourself a large dose by looking at an object at the closest focus of your 8x32 SE. No one could tolerate for long such a cross-eyed view, with an object of interest forced toward the edges of two nearly separated fields. The 8x56 FL seems to be a pretty good compromise for me. It has a little extra shot of 3-D compared to straight through for entertainment value and a much more comfortable close focus image compared to a wide Porro. Henry [/QUOTE]
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Zeiss uses AK prisms - so why not an open bridge design?
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