Photo realism is not about drawing a portrait picture or capturing an image, it is about noticing the variation in tonal values, gradation & highlights. It is about capturing a particular type of feeling, emotion or mood of a character or a particular characteristic of a picture that is recreated. There is always something realistic that the picture speaks or talks about. It could be tear filled joyful eyes, ripples created in still water by a dew drop, Silence in the eyes that stare at wilderness. It is all about reading every stroke of the pencil which is a line in a story that is being ready to be read.