back focus
noun Photography.
the distance between the back surface of a lens and the focal plane when the lens is focused at infinity.
Words nearby back focus
back electromotive force, back emf, back emission, back end, back float, back focus, back foot, back formation, back forty, back four, back gear
Origin of back focus
First recorded in 1895–1900
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020