BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="PhilR." data-source="post: 3516383" data-attributes="member: 118722">Everything that spokesperson stated is absolutely true.  Did you guys even watch the video?  He makes three key points:1.  Correct eyecup extension -- He is absolutely correct - not everyone will get their correct ER if they adjust the eyecups all the way out.  Some people will actually need a bit less extension, rather than full extension.  If your correct ER distance is with eyecups fully extended, then count yourself lucky, but don't discount what he stated just because *you* can use your eyecups fully extended.2. Potential decrease in FOV with fully extended eyecups  -- once again, absolutely correct.  I have several binos that have eyecups that will intrude into the FOV when fully extended.  Most notably an older Pentax porro, which has an extremely short ER.  If you can see the full FOV with your eyecups fully extended (as I can with most of my binos), then count yourself lucky, but don't discount what he stated just because *your* binos don't slightly obscure FOV.3.  Fogging when extended -- absolutely correct.  This happens quite frequently to me when I am extremely hot and sweaty.  Fully extended eyecups trap the water vapor coming off my face, and then fogs the oculars.  Also happens sometimes during extremely cold weather when the binos have cold-soaked for a while too.  Collapsing the eyecups allows air to circulate, which resolves the fogging.  If you live in an environment where this doesn't happen, then count yourself lucky, but don't discount what he stated just because *you* don't see it.</blockquote>

Verification