verb ( -focused , -focusing or -focussed, -focussing) [ trans. ]
cause (an image, lens, or beam) to go out of focus : the filter lets you defocus all or part of an image.
At the beach, for example, on vacation: why focus? Watching my husband toss a football to our son requires (of me) very little focus, yet captivates me completely. Dreamy recollections of a beach vacation don’t necessarily rely on the crisp details I demand of a lens.
Find it in the “first learn the rules, then learn to break them” chapter.