As a new Yeti owner there are lots of things to discover! Just beneath the glasses box in the central overhead bulge there are three little circular things in a horizontal row facing to the rear. The two outside ones look like they have some sort of lens and the middle one looks darker. What are these for? My guess is something to do with auto dipping mirror but they seem OTT for such a system? Can I call upon the wisdom of the members of this group once again for enlightenment?