Film Theory: History–Studying Film?

The tradition of all the dead generations weigh like a nightmare on the brain of the living–Karl Marx

It is the irretrievable image of the past which threatens to disappear in any present which does not recognize its common relation with that image–Walter Benjamin

Since there can be no history without singularity or absence, films don’t have a history, given that they are fully “present” every time they are screened–Pierre Sorlin