Ключевые слова: adventure, background, binocular, black, blue, closeup, cloud, concept, contemporary, discovery, distance, equipment, expedition, exploration, find, focus, front, glass, ideas, instrument, isolated, lens, looking, military, nobody, object, observe, optic, optical, photograph, reflection, search, searching, see, sight, single, sky, spy, studio, surveillance, telescope, tool, travel, vacation, view, vision, watch, watching, white, zoom,