Question

Can someone rewrite this in their own words please.
Open Depth of field is controlled by changing the aperture setting on your camera. Like your eye, a camera lens has an iris inside that can open or close to let in more or less light.
A shallow depth of field is the small or narrow area in an image that is in focus. Often, the background is blurred while only the subject stays in focus.

Answer 1

Changing the aperture setting on a camera can control Open Depth of field. A camera lens contains an iris, much like an eye, that opens and closes to let in a certain amount of light.

A small/narrow portion of an image which is in focus is referred to as a shallow depth of field. The background will often be blurred while the person or thing is focused.