Telephoto Lens
From Nikonians Wiki
A lens with a long focal length - longer than the diagonal of the film format used. In 35mm photography, under most conventions, "Short" telephoto lenses are of 85mm, 90mm, 100mm, 105mm and 135mm focal lenghth; "Medium" telephotos are 180mm, 200mm and 300mm; "Long" or "Super" telephotos are the 400mm, 500mm and 600mm; "Ultra" long denominated telephotos are 1,000mm focal length lenses.
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