Is a photograph of an art an art? Is a photograph of a sculpture an art? Is a photograph of a painting an art?

What is important in a photograph – an image or how it was made? Similarly for paintings: if we have two visually undistinguishable copies would we value the one that is proven to be original thru chemical analysis higher? Does it mean it is more important how something was made than its purpose?

I don’t have answers to either of the questions. It is just something I find interesting to think about.