Groups of photo thumbnails are presented to the user, and where a user selects one of the thumbnails, a transition is provided replacing the group of thumbnails with the photo represented by the selected thumbnail. The photo may be displayed without cropping or stretching. In addition, a zoom/enlargement animation of the selected thumbnail is provided, and also possibly of the remaining thumbnails in the group, which then transitions into the represented photo. In addition, after or during the zooming animation, a cross-fading may occur such that the thumbnails fade out and the represented photo fades in. These types of transitions and user inputs both while the user is manually browsing thumbnails and when the user is viewing an automated slideshow of the thumbnails.