Deep focus (or deep depth of field, as we would call it today) was dependent on innovations in technology. Faster filmstock and powerful carbon arc lamps enabled Toland to shoot between f8 and f16 ...

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 ...

You could also use a medium depth-of-field to not entirely blur the background or add deep depth-of-field to make everything visible in the shot. Since smartphone cameras typically have smaller ...

However, the ability to switch to a narrow aperture allows users to get closer to a subject before losing focus, a deep depth-of-field (i.e. everything in focus), and more control over the amount ...