How long does it take a photographer to take a photo? And does he have to build the landscape himself? If anyone says that a photo can't be a work of art because all the photographer did was buy a camera and press a button after squinting through the lens for a few minutes, then frankly, they don't know what they are talking about. As for this 2D-3D thing, you need to go to the sculptor for "real" 3D stuff. But we know very well what is meant by 3D computer art. No need to split hairs.