Dear Eric, Highlight: are you sure? Are you not selling yourself short? How are you defining "eminent"? Over the decades I've talked to lots of "very eminent" photographers, and as a general rule, the more "eminent" they've been, the less they've been inclined to draw false dichotomies between photography and art or between the three "categories" you present. My own suggestion is that the "degree of accidental overlap" is so great as to render the distinctions meaningless, cf. R. Mutt. I'm sure you're familiar with "Fountain" but for those who are not, see https://en.wikipedia.org/wiki/Fountain_(Duchamp) Cheers, R.