retrofocus lens

[ re-truh-foh-kuhs ]
/ ˈrɛ trəˌfoʊ kəs /

noun

a wide-angle lens, for use on single-lens reflex cameras, of inverted telephoto design, with a back focus greater than the focal length.

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Origin of retrofocus lens

First recorded in 1960–65; retro- + focus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021