We'll review the definition, look at some examples, and talk about why filmmakers have been using shallow depth of field more and ... you use a wide aperture (a low f-stop number) on your camera ...

The basic concept behind the extended depth of field is that a specially designed phase plate is inserted at the back aperture of the microscope objecive. The phase plate creates a uniquely shaped PSF ...

F-stop is a consistent way to measure lens aperture, and helps photographers control exposure and depth of field. It is noted with an f followed by a slash and number, for example f/2.8. Lower ...