1. A method performed by one or more processes executing on a computer system, the method comprising: receiving user input requesting to zoom to faces depicted in one or more digital images, where the faces include either human faces or animal faces; and in response to said receiving the user input and for each of the one or more digital images, presenting a zoomed view of the digital image that shows an instance of a face depicted in the digital image, the zoomed view being presented at a zoom-level that is selected (i) to be less than or equal to a predetermined zoom-level and (ii) to maximize a fraction occupied by the depicted instance of the face within the zoomed view of the digital image.