What does defocus mean?
Defocus is a verb that means to lose focus or sharpness, especially of the eyes or a lens. It can be used in both formal and informal contexts and is often used in photography and optics to describe the loss of sharpness or clarity. In everyday language, it can also be used to describe a mental or emotional state of being unfocused or unclear. The word has been used in English since the 17th century and has its roots in the Latin word 'defocare,' which means 'to unfocus.' Defocus can be used in a variety of contexts, including photography, optics, and everyday language. It is an important word to understand for anyone working with images or trying to describe their mental or emotional state.
To lose focus or sharpness, especially of the eyes or a lens.
"The camera's lens began to defocus after a few years of heavy use."
Defocus can be used in both formal and informal contexts.
To intentionally blur or soften the focus of an image or a scene.
"The photographer used a technique to defocus the background and emphasize the subject."
Defocus can be used in photography and optics to describe the intentional blurring of an image or scene.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of defocus
The word 'defocus' has its roots in the Latin word 'defocare,' which means 'to unfocus.' This Latin word is derived from the prefix 'de-' meaning 'away from' and the word 'focus' meaning 'a point of convergence.' The word 'defocus' entered the English language in the 17th century and has been used in various contexts since then.
How defocus is actually used
Defocus can be used as a verb in both formal and informal contexts. It is often used in photography and optics to describe the loss of sharpness or clarity. In everyday language, it can also be used to describe a mental or emotional state of being unfocused or unclear.