Ключевые слова: aim, alone, army, binocular, binoculars, black, campaign, concept, discovery, effect, expedition, explorer, eye, follow, frame, glass, gun, instrument, investigation, isolated, lens, look, mark, nature, nobody, observe, old, optical, overlay, png, researcher, retro, scope, shape, sight, surveillance, symbol, target, telescope, telescopic, template, transparent, view, viewfinder, vision, watch, white,