A portrait photo is a photo that emphasizes the details of the object in the photo, to show the character of the object in the photo. If the object is a human, then in general the eyes of the object will stare straight at the camera. This shows that there is intense "communication" between the object and the photographer. Facial expressions are so dominant in expressing one's similarities, personality, and even feelings. In general, portrait photos display the natural expression of the object in the photo. here the eyes of the object become an important component of a portrait photo.