>>2636661Yes. The plane of focus doesn't get any narrower or longer though, because it's a plane and planes are infinitely thin. There is only one single infinitely thin plane which is in sharpest focus. In front of and behind that plane there is an area where the focus is close enough to also be sharp, and that is called the depth of field. The depth of field is what gets narrower or deeper if you use a larger or smaller aperture.
