defocusing

IPA/dɪfˈəʊkəsɪŋ/
IPA/dᵻfˈoʊkəsɪŋ/

defocusing — verb

  • defocusingpresent simple I / you / we / they
  • defocusings3rd person singular
  • defocusinging-ing form
  • defocusingedpast simple

1. to adjust a lens or optical device so that the image it creates becomes unclear

1.動詞及物C1
釋義

to adjust a lens or optical device so that the image it creates becomes unclear and lacks sharp edges; to deliberately make an image less sharp so that it looks soft or out of focus

例句

The photographer defocused the background slightly to make the model's face stand out more clearly.

defocus + noun phrase (the background) for artistic effect

Paloma defocused the microscope briefly, then turned the fine-focus knob to see the cells more clearly.

同義詞
  • blur

    more general and far more common; 'blur' can be accidental or intentional, whereas 'defocus' implies an optical/lens adjustment

  • soften

    gentler connotation, usually describes the final look rather than the lens action itself

反義詞
  • focus

    the direct opposite action — making an image sharp and clear

  • sharpen

    commonly used in digital image editing to achieve the opposite result

文法句型

defocus + noun phrase

用法筆記

Typically used in photography, cinematography, and microscopy contexts. The passive form ('the image was defocused') is common in technical writing.

常見錯誤

❌The camera defocused the picture by itself.
✅The camera lens was defocused intentionally by the user.
💡'defocus' is almost always a deliberate human action, not something a device does on its own.