What, in your view, makes photographs unique as an art form?
Photographs are unique as an art form because of the person behind the camera. As much as one person will draw an apple differently to another, one person will photograph a scene or object differently again. Photographs are the photographers representation of a moment of reality, a moment which will likely never be repeated. Emotions and messages can be conveyed through photographs, mood and tone. Photographers paint with light the same way that painters do, the only difference is, in some form, the subject in their images is real and recognisable.
In terms of the form of a photograph there is no difference between an image displayed ona digital screen or presented as a hard copy. Digital images are adjustable but if you do that, it has become a different photograph. A photograph does not have to be permanaently fixed, a film is just a lot of individual photographs moving incredibly quickl, freezeframes.