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Message: <blockquote data-quote="jan van daalen" data-source="post: 3633097" data-attributes="member: 113800">Bob,I am as confused as you are.The explanation I got from Swarovski was that they made the lightrays, after entering the objectiv lenses, somehow wider resulting in a (what they call) optical box, situated direct after the eye lens, which gives the user the possibility to manipulate the binocular within the eyerelief from 0 - 21mm without experiencing blackouts/kidny beans.I know, it sounds like the "amazing" depth of field experience some have with the Noctivid (while there can't be<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" />)but it worked for me. Hopefully someone from Swaro can tune in regarding this matter to make clear how they actually managed this.Jan</blockquote>