Share this entry

Share this page

back focus

Line breaks: back focus

Definition of back focus in English:

noun

Photography
The distance between the back of a lens and the image of an object at infinity.
Example sentences
  • If the focal length is positive and the back focus B is longer than the focal length, the result is a reversed telephoto, or retrofocus.

Definition of back focus in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day resilient
Pronunciation: rɪˈzɪlɪənt
adjective
able to recoil or spring back into shape…