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.

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Etymology

Origin of back focus

First recorded in 1895–1900

Example Sentences

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

From BBC

The High Quality Camera, however, supports interchangeable C- and CS-mount lenses and offers adjustable back focus.

From The Verge

After failing to stop the first summit, Bolton seemed to sit back, focus his attention on other matters, knowing that at some point the affair would fizzle and the reality—the fact that Kim has been stringing Trump along from the start and has no intention of giving up his nuclear weapons—would become all too obvious, even to Trump.

From Slate

“Instead of following a program to get back focus and productivity I made myself open to idleness,” she says.

From The Guardian

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

From The Guardian