One of the mysteries of the English language finally explained.
A strongly diverging compound lens, especially (in later use) one which serves as a component in a telephoto lens, or which is used with an astronomical eyepiece to magnify the image.
Designating a compound lens of this type (chiefly in "telenegative lens"); having the property of such a lens.
Late 19th century; earliest use found in Year Book Photography. After German Telenegativ.
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