For your Art Community, I think you have described what is what. I know that photos are used in studies, and it is a fine line from plagiarism, to rip-off. If some one claims they took the picture, and this is their drawing of it to showcase how they saw it that is fine. If someone did not take the picture, and claim to have taken it, then that is not fine.

I am somewhat confused by what you are allowing reference the "case Studies". Is it okay for an artist to use a photography as an aid and then present his water or oil painting on the site? as long as they say this is the original photo from (source), and how I saw it in oil or mixed media.

I ask because I do enjoy seeing how various people can see a photograph through the use of their medium, kind of like how I enjoy a Short Story from a picture, they are all different. As long as they provide the source of the photo themselves or someone else's I would not see that as a rip-off, but I would like to see a few progress photo's just to know it is real and not memorex.

I am all for communities controlling what they see is beneficial to their community. Just because there are some cute cows, and some people that ride cows, Cows do not belong in a Horse show. So as a visitor and a consumer to various communities, I appreciate it.

If I want to see artistic photographs, I visit the Photography Communities. So your excluding Artistically rendered photo's is not a big deal to me and I appreciate it since I visit the Art forum for Paintings, Sculptures, and other forms of art such as stained glass, and not pretty pictures.