I walked through there this am and was truly impressed. I'll have to look at (what I think was) the artist's statement, which led me to believe they were all film. Regardless, great images and processing - digital or film.
As your a fan of his, you might want to point out to him that he's making available a rather large file for anyone to download/print. The 1024 by whatever JPEg on his flicker could be printed/framed (with a fair amount of detail) by anyone.
I think it's his setting on flickr. I just recently started uploading pics there, and made sure that I didn't allow just anyone to d/l the larger files. I upload high res JEGS at highest setting.