All 11 Uses of

focus
in
Black: The Birth of Evil

This whole thing is definitely out of focus.†
Chpt 15 *

out of focus = in a state where something cannot be seen clearly

Stocks are bound to react to the news, but the gains may be tempered by the announcement that the firm's Ohio plant will close in the interests of focusing on the Raison Vaccine, developed by the Bangkok facility.†
Chpt 8 *

You should be focusing on other things now, not trivia from the distant past.†
Chpt 16

But with Monique de Raison's final statement, everything came into simple focus.†
Chpt 17

Definitions:

(1) (focus as in: Turn your focus to question #2.)
verb: to concentrate, look at, or pay attention to

noun: the act of concentration, or the ability to concentrate

(to concentrate is to direct attention or effort towards a single thing)
(2) (focus as in: The focus of our study is...)
where attention is concentrated or directed
(3) (focus as in: bring into focus; or out of focus)
a state where something has come into view or can be seen clearly; or an adjustment made to permit a clear view
(4) (focus as with technical usage)
technical usage typically involves some sense of center or concentration such as:
- physics — a point where things come together such as the point where light rays meet
- geometry — a fixed reference point (as of a parabola)
- geology — the point of origin of an earthquake
See a comprehensive dictionary for other less common meanings.