Why They RuleA company that satisfies legions of birderssome of the fussiest buyersobviously knows its optics. Focusing is superfast and precise, but not overly sensitive. You see it, you nail it. » The image is breathtakingly sharp, like an Ansel Adams glass-neg enlargement. » Though Steiner spec'd the Peregrines for birders, that's good news for everyone else, too. Birders want true color; check. They need high light transmission for deep-forest shade; they get it, via more than 40 lens coatings and 42mm objectives. Even in murky lighta marina at duskanything I pointed them at, from feeding pelicans to partying yachters, sprang to life. » Featherheads ply their craft for long hours; the 25-ounce rubber-armored bodyridged on top, flat thumb spots belowis a pleasure to hold.Hmmm . . .The folding eyecups will wear out faster than twist-out types.