Photographed using an Olympus OM-D
Shallow depth of field with the foreground in focus
Shallow depth of field with the middle-ground in focus
Shallow depth of field with the foreground in focus
Shallow depth of field with the background in focus/ Broad depth of field with most or all of the image in focus
Still camera, moving subject — the scene will be sharp, but your moving subject will be blurred.
Moving camera, still subject — all of the photo will be blurred
Moving camera, moving subject — the scene will be blurred but the subject will be sharp, as long as the movement of your camera is tracking your subject