When we look at someone's photo (especially his/her face), we can have any feeling. Maybe we can feel happy, sad, angry, like, dislike, love, peaceful, joyful, fear, and other feeling/ mood. We will feel another mood when we look at the other persons photo.
What factors determine this circumtenses? Can this way be used as one of the media to treat mental illness? Depression, schizofrenia, bipolar, etc.
When someone look at his/her favorit angel's photo or saint's photo maybe he/she can become more relax and tidy.