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Message: <blockquote data-quote="Omid" data-source="post: 1806599" data-attributes="member: 16724">Firstly, I just came across this paragraph today and it MADE MY DAY! Bravo Ron! Well, said! Now, speaking of Zeiss binos I have no problem with long binoculars. What's wrong with that?? I prefere long ClassiC-style tubes to  chubby Stiener-style ones <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" />Secondly, if any body here craves for a Zeiss 15x60, you can have mine:<a href="http://www.cloudynights.com/classifieds/showproduct.php?product=28907&sort=&cat=13&page=1" target="_blank">http://www.cloudynights.com/classifieds/showproduct.php?product=28907&sort=&cat=13&page=1</a>:frog:Thirdly, I have a question about exit-pupil that I ask here: How much can one move his eyes to the side and still see full-field of view in a binocular or a spotting scope? Could we calculate that based on the exit pupil width and human eye pupil width? (i.e. as longs these two pupils keep a suffiecient overlap, the eye sees full field of view? Example: 10X50 binculars have a 5mm pupil, human eye pupil during daylight about 2.5mm ---> max possible eye movement before going fully off the exit pupil is about 3mm?Based on this theory the amount of possible eye misplacement will change during day and twilight as the eye pupil changes its diameter! Any comments??</blockquote>

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