English Dictionary

defocus

/diːˈfəʊkəs/

noun

The process of going out of focus. / (optics) The distance by which the focal point is in front of (positive defocus) or beyond (negative defocus) the image or target surface.

The defocus of the camera lens creates a dreamy effect in the photograph.

意味（1）

The process of going out of focus.

意味（2）

(optics) The distance by which the focal point is in front of (positive defocus) or beyond (negative defocus) the image or target surface.

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