Ключевые слова: adjustable, back, background, binocular, closeup, concept, convenience, countryside, detail, distance, enlarge, equipment, eye pieces, eyesight, faraway, focus, hinged, infrastructure, installation, instrument, landscape, lenses, magnification, magnify, metal, movable, nobody, observation, observe, ocular, open air, optical, outdoors, outlook, overview, public, rotate, scenery, service, sightseeing, silver, telescope, telescopic, tourism, tourists, travel, view, view point, viewing, vision,