[ re-truh-foh-kuh s ]
/ ˈrɛ trəˌfoʊ kəs /
a wide-angle lens, for use on single-lens reflex cameras, of inverted telephoto design, with a back focus greater than the focal length.
Retro Words You’ll Probably Never Use AgainMost of these retronyms -- obsolete words and phrases -- are outdated technologies.
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- retrograde amnesia,
- retrograde beat
Origin of retrofocus lens
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019