The film opens with the camera focused on a book.

The camera focused in on his pleading for all the world to see.

The camera can only focus on one thing at a time and that is usually the actors.

The camera cannot focus on that point until the mind/eye makes the decision.

Only trouble: the camera may not focus close enough for this strategy to work.

Who then took the lead, as the camera focused on him?

Again the camera focused on a face in the crowd.

In certain cases, he got so close to his subjects that the camera would not focus.

The camera focused on a man coming out of the station.

And if American soldiers die, the cameras will focus on their families at home.