different between refocus vs defocus

English

Etymology

re- +? focus

Verb

refocus (third-person singular simple present refocuses or refocusses, present participle refocusing or refocussing, simple past and past participle refocused or refocussed)

1. (intransitive) to focus on something else
2. (transitive) to change the focus of

   to refocus a microscope

3. (intransitive) to change one's priorities
4. (intransitive) to come back into focus

Usage notes

The spellings refocusses, refocussing, refocussed are more common in Britain than the US.

See also

• focus
• prioritize

Anagrams

• focuser

English

Etymology

de- +? focus

Pronunciation

• (UK) IPA^(key): /di??f??k?s/

Verb

defocus (third-person singular simple present defocuses or defocusses, present participle defocusing or defocussing, simple past and past participle defocused or defocussed)

1. (transitive) To cause (a lens, or a beam of light or particles, etc.) to be out of focus.

Noun

defocus (uncountable)

1. The process of going out of focus.
2. (optics) The distance by which the focal point is in front of (positive defocus) or beyond (negative defocus) the image or target surface.
   • 2012, Subhasis Chaudhuri, A. N. Rajagopalan, Depth From Defocus: A Real Aperture Imaging Approach (page 16)

     Fundamental to the concept of recovering the depth by measuring defocus is the relationship between the focused and the defocused images of a scene.

Anagrams

• focused