The term is used a lot, its clear to me that its generally used to describe the absolute top tier of optics based on optical quality—even if other brands are close, these are the brands and qualities that everything else is compared to. I always understood it to include swarovski and the high-end zeiss models, but Im curious what other brands (if any) people include in “alpha”? For instance is leica an alpha brand? Kowa? Meopta? Any other brands? In common usage do people use it to describe rifle scopes, or only binos and spotters?