A Opera binocular is not something you use for looking at the stage.
An Opera binocular is something you use to watch others in the audience, not someone on the stage ; "Are she still wearing that old clotch", " Whom is that she dragged with her to the theater ?
Also, an opera binocular is not something, that will make the other audience wonder why that person constantly are putting his cigar in his eye, Binocular refere "two" not "one" as in "Mono". Beside, defination of an Theater or Opera Binocular has nothing to do with _where_ it's used. but the magnification.
Every binocular that has an magnification under four X, is an Opera Binocular.
They are Opera Binoculars, not football glasses. --- Or how is it birdwatch bino's and sailers telescopes, are suggested here no one are interested in watching the Diva's nose. Sn opera binocular must reach the intire stage not less not more.
More than 4X are silli in an opera offcaurse but not in a football field, but realy, Opera binoculars are there to be seen , why else should they be made of Mother of pearl and gold or Lizzard skin - please .
They were the Gadgeds of their time, -- Expensive Gadgeds. think about it, an Opera Binocular or a "Folding Minin" year 1914, costed 7£ 2Sh. -- That's 3.951,54 Us$ in today's money, "Who" would spend 4K on a bino, just to use in the Opera ; do you still think Opera binoculars are for watching the stage ?
Don't confuse an expensive Gem for the cheap "Salt&Pebber" "Opera bino's, --- Sold today. Zeiss's Theatis would simply be to expensive to find an audience, it's a first class piece of optics, something you will agrea if you just read about it.
