unfocus

As a verb unfocus

is to bring out of focus.

As a noun null is

zero, nil; the cardinal number before einn.

As a noun terms

is .

As a verb unfocus is

to bring out of focus.

As verbs the difference between defocus and unfocus

is that defocus is to deliberately cause a lens, or a beam of light or particles, to be out of focus while unfocus is to bring out of focus.

In transitive terms the difference between focus and unfocus

is that focus is to adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane while unfocus is to bring out of focus.

As a noun focus

is a point at which reflected or refracted rays of light converge.