1. A method of capturing an image, comprising: capturing an image of a scene with an image sensor; determining a plurality of subjects in the image; determining a subject score for each of two or more subjects in the image, wherein determining a subject score of a subject comprises: detecting a face of the subject in the captured image, determining a face position score based on the detected face, and determining the subject score based at least in part on the face position score; determining an image score based, at least in part, on the subject scores; capturing a snapshot image of the scene with the image sensor and storing the snapshot image to a data store if the image score is above a threshold; and outputting a prompt based on the score of a subject if the image score is below a threshold.