In photography and digital photography, portrait mode is a function of the digital camera that is used when you are taking photos of a single subject. When taking photos in portrait mode, the digital camera will automatically uses a large aperture to help keep the background out of focus by using a narrow depth of field so the subject being photographed is the only thing in focus.
Other digital camera settings and shooting modes include:
Contrast with Landscape Mode.
See also “The Digital Camera Picture” in Webopedia’s Quick Reference section.