1. A portable digital image capturing device having no photographic film, comprising: a flash for providing illumination during image acquisition; an optical system including a lens and an image sensor for capturing a main digital image; a half-face tracker for identifying only one or more half-face regions within a series of one or more relatively low resolution reference images, and predicting an approximate location of said one or more half-face regions within the main digital image; a half-face analyzer for determining one or more half-face regions in the vicinity of the approximate location within the main digital image predicted by the half-face tracker, each half-face region including only one eye and one or both of only a half nose or only a half mouth region; and a red-eye filter for modifying an area within the main digital image indicative of a red-eye phenomenon based on an analysis of the one or more half-face regions within the main digital image, each including at least one half-face region predicted by the half-face tracker.