Stealthy,

Zeiss used to buy glass from Swarovski all the time. They now buy from Schott and their quality isn't as good.
Leica makes awesome binoculars too and use Japanese glass in theirs.
The E.D. glass in Nikon Austrolux Binoculars is probably the best on the planet but they're so heavy, they are useless for hunting.
They weigh 4 to 5lbs. depending on the model.
The new Swarovski E L's are their best right now.


Sag.