1. A method for detecting a face in a mid-shot digital image of a person, the method comprising: using a lens, image sensor and processor of a digital image acquisition and processing apparatus, capturing first and second mid-shot digital images of approximately a same scene that is known to include at least a face and a portion of a torso of a human person, including using different capture settings such that the foreground is differently differentiated from the background in each image, comparing the first and second images to determine the foreground region of the images, and identifying a portion of the foreground region likely to correspond to a face based upon matching one or more known face-to-torso geometric relationships to one or more geometric relationships between regions of the foreground region of the first and second images.