I am confused ?. When looking at some of Opticrons past, now discontinued binoculars. Such as the Imagic BGA SE 8x32 having " F " type multi - coatings or the Classic BGA 7x36 having " N " type coatings and the DBA Oasis binoculars having " S " type multi - coatings . So what's the difference ? Is one coating better/ brighter than the other ? I am curious because I had the 8x32 Countryman HD 8x32 and it stated having the Oasis prism coatings with no letter labeling.
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