Camera techniques - Shallow depth of field

Here is a video clip and a couple of photographs demonstrating shallow depth of field.

For the video I used a shallow depth of field of approx f/4. I set the camera to a manual focus, and manually put the lens out of focus, this meant that when the subject was a distance away from the camera she was blurred, however when she moved closer to the camera she came into focus. This technique was used in New Wave to separate the main subject from their surroundings. The camera was on a fluid head tripod, with a shutter speed of approx 1/60, and an ISO of approx 150/200.

Using a shallow depth of field for film has the same effect for still images. I photographed these images with a higher aperture than I used for the video, however it still has the same effect in distinguishing the main focal point and 'taking it away' from the surroundings.