I once had a pair of BD XD 8x33s. They were very nice but on the very outside of the view there was a bright halo no matter what I did. Recently I read a review of the Genesis model and the reviewer mentioned the same thing. He said that he retracted the eyepieces one position and then and only then then did the halo disappear. Has anyone else had the same experience with their Kowa? Any idea why the halo occurs? Perhaps they don’t blacken the edges of their lenses? Just curious. I had forgotten about this until I read the Genesis review.