[susan53]

In the video, yes it's the same.

You can "zero in on" someone or something, meaning to focus/concentrate on, or investigate closely. So eg

1. In the Africa bombings manhunt both magazines ZERO IN ON Osama Bin Laden the technosavvy multimillionaire Saudi exile living in Afghanistan (see here)

2. Instead Chatterbox ZEROED IN ON the two years when Gore cast considerably more votes considered anti environment by the LCV than he did in other years (see here)

3. The Wall Street Journal's The Outlook column ZEROES IN ON the closest thing to a storm cloud in the current economic forecast - the stunning erosion of lending standards (see here)