Analysis of information sources in references of the Wikipedia article "Canon EF 1200mm lens" in English language version.
In [the] 1980s, a rival company was making a 1200mm f/5.6 super telephoto lens. The newspapers were beginning to switch over to cameras made by this company in order to use the lens in their coverage of baseball at Koshien Stadium. In May 1989, Nikon rushed to begin development of its own super telephoto lens for Koshien Stadium.
In [the] 1980s, a rival company was making a 1200mm f/5.6 super telephoto lens. The newspapers were beginning to switch over to cameras made by this company in order to use the lens in their coverage of baseball at Koshien Stadium. In May 1989, Nikon rushed to begin development of its own super telephoto lens for Koshien Stadium.
