[welly]

Silver gelatin, oil paint, bronze, are media. Digital files are information; a digital file could just as easily be a representation of a symphony or a text or a 3 dimensional world or anything. Digital photography may be a discipline but the media 'digital photography' does not exist.

Rubbish. Of course it exists. The very fact that a digital file could store all those things demonstrates digital IS a form of media like analog tape, like acetate or like paper. Digital photography is a discipline and a digital photograph IS a photograph. Media - a tool used to store and deliver information or data. Look it up.