Is it significant when you can recognize the references in a piece of art? I always thought the rule of thumb was that using reference is good, but copying reference is generally poor. An artist should make effort to, I don't know, go beyond what the reference provides? Learn from the reference and incorporate that into the artist's own vision? Or ... something?
I ask because when browsing other art sites I routinely recognize the sources in the artwork that is posted. I'm not sure that other visitors do, and the references are never explicitly acknowledged. What's proper for this sort of thing?
Tourist