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Binoculars & Spotting Scopes
Binoculars
Zeiss
Crystalline clarity of the HT ?
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<blockquote data-quote="typo" data-source="post: 3420660" data-attributes="member: 83808"><p>Have you considered hand shake as a factor?</p><p></p><p>While there are exceptions, the effective resolution of most modern binoculars is actually pretty good and in practice eyesight will be limiting even for those with 20/10 vision. Using 6 of my binoculars I worked out the test chart limit of what I could see tripod mounted and hand held. The difference ranged between 25% and 45% worse hand held. For the 45 percenters I could improve the performance by adding weight at some point along the length of the binocular to change the balance. I don't know if this would translate to other users at all but for me weight and balance make around a 20% difference to the level of detail I can see. </p><p></p><p>Tobias, as a professional photographer is very aware of perceptual sharpness differences between lenses. This is a totally different parameter from acuity or effective resolution limits and while there are 'sharpness' differences between binoculars in my experience is very dependant on the illuminating light unlike resolution. While I had the Kite Bonelli 2.0 for review I was able to compare it to compare it to a Zeiss FL and a HT briefly, amongst many others. Under the light conditions at the time the Kite was clearly 'sharper' than the Zeiss pair (and others I tried) but I could see no difference at all in limiting detail as I would expect. The tables may well have turned in different light, I couldn't say. I've seen no eveidence that perceived sharpness is an intentional part of binocular design, but I could be wrong.</p><p></p><p>It's not something I've been been able to pin down by testing but I suspect perceived shapness is unaffected by hand shake, unlike limiting resolution.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="typo, post: 3420660, member: 83808"] Have you considered hand shake as a factor? While there are exceptions, the effective resolution of most modern binoculars is actually pretty good and in practice eyesight will be limiting even for those with 20/10 vision. Using 6 of my binoculars I worked out the test chart limit of what I could see tripod mounted and hand held. The difference ranged between 25% and 45% worse hand held. For the 45 percenters I could improve the performance by adding weight at some point along the length of the binocular to change the balance. I don't know if this would translate to other users at all but for me weight and balance make around a 20% difference to the level of detail I can see. Tobias, as a professional photographer is very aware of perceptual sharpness differences between lenses. This is a totally different parameter from acuity or effective resolution limits and while there are 'sharpness' differences between binoculars in my experience is very dependant on the illuminating light unlike resolution. While I had the Kite Bonelli 2.0 for review I was able to compare it to compare it to a Zeiss FL and a HT briefly, amongst many others. Under the light conditions at the time the Kite was clearly 'sharper' than the Zeiss pair (and others I tried) but I could see no difference at all in limiting detail as I would expect. The tables may well have turned in different light, I couldn't say. I've seen no eveidence that perceived sharpness is an intentional part of binocular design, but I could be wrong. It's not something I've been been able to pin down by testing but I suspect perceived shapness is unaffected by hand shake, unlike limiting resolution. David [/QUOTE]
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Binoculars & Spotting Scopes
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Zeiss
Crystalline clarity of the HT ?
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