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.

Answer 1

By changing the aperture setting on your camera you can control open depth of field. There is an iris inside a camera lens that opens and closes to let more or less light enter it, just like your eyes.