One may say that photography as an art is to be used to pass on a message. Through one's image this message must be transmitted to the viewers while transporting the person along a journey of discovery as their eyes roam.
I see photography as a means of capturing a moment in time, an instance that otherwise would be lost for ever. While the essence of the image is determined by the subjects making up the image, the feel and the mood of this is what a photographer may influence through his choice of composition and processing.