The depth of field in an image is the distance between the parts that appear in focus. When there's a big distance between the things that look crisp and sharp, it's known as a wide or deep depth ...

Our approach to extending the depth of field utilizes the concept of point spread function (PSF) engineering to greatly increase the axial range clearly imaged in a single exposure. The basic concept ...

No, I'm talking about the intentional things we photographers do to limit the depth of field in our pictures. Things we can do to make the backgrounds nice and soft, leaving just the subject in ...