defocus

defocus englanniksi

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

2. The process of going out of focus.

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

4. {{quote-text|en|year=2012|author=Subhasis Chaudhuri; A. N. Rajagopalan|title=Depth From Defocus: A Real Aperture Imaging Approach|page=16