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back focus

American  

noun

Photography.

  1. the distance between the back surface of a lens and the focal plane when the lens is focused at infinity.

Etymology

Origin of back focus

First recorded in 1895–1900

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"It was a time where I really needed to step back, focus on being present," he said.

From BBC • Feb. 18, 2022

I suggest you step back, focus on your own life and in future encourage your father to do likewise.

From The Guardian • Dec. 23, 2018

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.