1. A computer-implemented contextual zoom control method, the method comprising: detecting faces in an area of interest when a user is performing an image capturing action; extracting a facial image for each of a set of key individuals attending an event where the user is performing the image capturing action; creating a ranked list of the set of key individuals according to a predetermined parameter of each key individual; pairing each detected face with a matching extracted facial image to label an identity of each key individual in the area of interest; and in a single individual capturing mode, performing a camera function to assist the user in performing the image capturing action on the identity that is paired with a highest ranked individual on the ranked list within the area of interest, wherein the camera function includes at least one of a zoom function and a focus function.