Thought so as well, although it is unfortunate that I had looked at the work after knowing the context. As someone who has been doing photography for 10+ years and spent most of it shooting on a D800, these images are a far cry from the quality that DSLRs give.

Definitely thought the same. Even for the most realistic ones, something about the eyes always stands out to me. Can't really pinpoint it though, maybe they are too perfect (as in round) or the ratio of pupil/iris is always exactly the same?

One of them is straight up the "Chad" meme. It's blatantly obvious.