In Portrait photography what is shown in an image?
yes of course is expression or emotion, in portrait photography that is important is how we can get and perpetuate expression and emotion of the subject so that the photograph is immortalized become more meaningful and interesting. Expression or emotion is very important to appear as natural as possible, whether it is cheerful, angry or sad. One way to get the expression and emotion of the subject of photography is to communicate with the subject, we will know and know more closely with the subject.
Canon EOS-1D Mark IV, f / 1.6, 1/160 sec, ISO-400