For as long as cameras have existed, they've had a fundamental limitation: they can only focus on one depth plane at a time, and everything in front of or behind that plane gets blurred. That's simply ...

Four lenses and a Spatial Light Modulator allow each pixel to have a different focal length in research from Carnegie Mellon ...

In photography, depth of field refers to how much of a three-dimensional space the camera can focus on at once. A shallow depth of field, for example, would keep the subject sharp but blur out much of ...