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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1271810" data-attributes="member: 68323">The other big thread at 24campfire (for those that haven't found it yet) is<a href="http://www.24hourcampfire.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/2373162/page/1/fpart/1" target="_blank">http://www.24hourcampfire.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/2373162/page/1/fpart/1</a>Tero,Note that a overcast winter day is somewhere between 10 and 100 times brighter than twilight (so that's 10 to 20dB difference). It may seem dark but it's not that dark. And in those conditions your pupil is still pretty much stopped down to "daylight" values.As I posted on another thread, comparing the Diamondback lack of twilight brightness against a Yosemite, for roof prism bins with the same type of mirror coatings like then the answer would be "no". But a dielectric mirror coated 8x32 (or a porro 8x32 <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> ) could come very close to or beat an 8x42 with aluminum mirror coating because it has much higher transmission. A porro would win at much lower cost!For pupil sizes although averages are often quoted and the general trend is to smaller amount of adaptation with aging the actual values are much more variable from person to person that is revealed.If you have a digital camera with a flash and a ruler (hold it up to your face) you can measure your own eye pupil size at different brightnesses. Turn the red eye feature off (of course) as you want red eye.OwenM, I was trying not to post the name (you might edit your post to remove the name to preserve the mystery <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> ). The model name you have is not quite right. See my original link (there's an extra bit).</blockquote>

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