I can see an artist spending hours and hours of their life making sure that a model looks a certain way in 3D. I don't think said artist would be intimately involved with textures on how cobblestone road looks, because that is usually a small texture map that is then repeated across a surface and squashed or stretched depending on the variables involved with the point of view.
http://en.wikipedia.org/wiki/Anisotropic_filtering
But what about QA?